What's Changed

• miner: recover veblop producer stall when a build wedges with no pending task by @lucca30 in #2287

Full Changelog: v2.9.1-beta...v2.9.1-beta2

v2.9.1 comes with two main features, BlockSTM v2 and devp2p peer jailing, both enabled by default.

What's Changed

• feat: add p2p observability metrics by @vbhattaccmu in #2242
• core, blockstm, state: add BlockSTM v2 parallel transaction execution by @cffls in #2210
• CI/CD consolidation on bor by @sanketsaagar in #2249
• chore: update go.mod by @kamuikatsurgi in #2254
• chore(deps): bump cometbft fork pin to v0.3.8-polygon by @pratikspatil024 in #2263
• ci-cd improvements by @vbhattaccmu in #2262
• core/state, core: fix BlockSTM v2 vs serial divergences behind recent bad blocks by @cffls in #2270
• core/forkid: add amoy and mainnet forkid testcases by @manav2401 in #2271
• fix: pin kurtosis-pos to v1.3.4 by @kamuikatsurgi in #2273
• Fix nightly race test flakes by @pratikspatil024 in #2278
• Fix new tx flow race test by @pratikspatil024 in #2282
• feat: devp2p peer jailing by @vbhattaccmu in #2283
• Stabilize skeleton timeout requeue test by @pratikspatil024 in #2291
• ethapi, eth: implement eth_baseFee RPC method by @wjmelements in #2231
• Backport from master to develop by @lucca30 in #2274
• core/state, core: exact-writer validation for v2 destruction-resolved reads by @cffls in #2290
• Backport v2.9.0 by @kamuikatsurgi in #2296
• core/rawdb: avoid the freezer read-lock for recent header lookups by @marcello33 in #2288
• chore: remove SonarQube/SonarCloud integration by @0xCVH in #2298
• build(deps): bump golang.org/x/crypto from 0.51.0 to 0.52.0 by @dependabot[bot] in #2299
• miner: stabilize freed gas feedback test by @pratikspatil024 in #2300
• eth/filters: honor context cancellation in bor block-log range scan by @lucca30 in #2259
• (feat): implement debug_traceCallMany by @manav2401 in #2257
• txpool/legacypool: fix fillPool TOCTOU and remove debug prints by @lucca30 in #2269
• agents: fetch team standards from 0xPolygon/pos-standards by @marcello33 in #2304
• Enable trace methods by @tmeinlschmidt in #2294

New Contributors

• @0xCVH made their first contribution in #2298
• @tmeinlschmidt made their first contribution in #2294

Full Changelog: v2.9.0...v2.9.1-beta

Valencia hardfork release for the Polygon PoS Bor execution client.

Activation

What's Changed

• Release v2.9.0 by @kamuikatsurgi in #2295

Full Changelog: v2.8.3...v2.9.0

Bor v2.8.3 is a maintenance release containing bug fixes across the miner and consensus engine, a full gRPC server implementation (disabled by default), a builder-phase streaming prefetcher, and observability, configuration, and build improvements.

What's Changed

Features

• (feat): disable pending block creation loop via flag by @manav2401 in #2175
• consensus/bor, internal/cli: full grpc implementation by @marcello33 in #2194
• prefetcher: builder-phase prefetch + streaming worker pool by @lucca30 in #2192
• (feat): tracing support for state-sync transactions by @manav2401 in #2236
• security: harden gRPC server — disable by default, bind to localhost by @harshinsecurity in #2078

Bug Fixes

• consensus: fix milestone-mismatch rewind deadlock by @kamuikatsurgi in #2246
• consensus/bor, miner: fix stale pending state for non-validator nodes by @cffls in #2183
• miner, consensus/bor: fix leaked-wedge family in worker state machine by @cffls in #2220
• miner: drop PeerCount==0 gate in mainLoop by @cffls in #2238
• consensus/bor: fix race in SpanStore.PurgeCache by @lucca30 in #2235
• miner: disable tracer in vm.Config to prevent conflicts during block synchronization by @maoueh in #2206
• ethapi: include pre-Madhugiri state-sync logs in bor_getLogs by @LarryArnault45 in #2155
• eth: stop dialing before waiting on handler shutdown by @LarryArnault45 in #2158
• eth: cancel milestone subscriber on shutdown by @kamuikatsurgi in #2199
• core/state: fix GetWriteMapDump write-set output by @AaronAjose in #2156
• core/types: guard (*Header).GetValidatorBytes against short Extra by @kajaaz in #2222
• triedb/pathdb: fix exponential memory growth in preload BFS by @lucca30 in #2187
• rawdb: recover witness size from filesystem metadata miss by @AaronAjose in #2200
• metrics, build: fix time.Tick resource leaks and oss-fuzz shebang by @haoyu-haoyu in #2145
• Fix triejournaldirectory wiring by @jschnelder in #2213

Observability & Metrics

• metrics: fix ResettingSample Prometheus _count monotonicity by @lake-dunamu in #2174
• miner, consensus: more block building metrics by @manav2401 in #2228
• miner: format build-block log times as RFC3339Nano, gate on IsRunning by @kamuikatsurgi in #2239

Configuration & CLI

• internal/cli: enabled witness filestore by default by @pratikspatil024 in #2191
• templates: replace dead witnessprotocol with witness.enable hint by @apetro2 in #2204
• packaging/docs: replace deprecated rpc.batchlimit key by @odupontt in #2216
• p2p: add flag to disable snap/1 serving by @lucca30 in #2152
• Fixing amoy static peers by @sanketsaagar in #2209

Testing, CI & Build

• all: fix nightly race test flakes by @cffls in #2193
• core/vm: add hardfork precompile continuity checks by @pratikspatil024 in #2234
• miner: fix TestPrefetchRaceWithSetExtra deadlock by @wjmelements in #2233
• ethclient: bound tx indexing wait in tests by @LarryArnault45 in #2211
• eth/fetcher: refactor witness_manager to reduce complexity by @cffls in #2188
• build: bump Go to 1.26.2 and 1.26.3 to fix stdlib CVEs by @lucca30 in #2189 and #2230
• build: bump x/net for govulncheck by @lucca30 in #2240
• build(deps): bump go.opentelemetry.io/otel/sdk from 1.40.0 to 1.43.0 by @dependabot in #2182
• ci: fix kurtosis setup/cleanup action paths by @cffls in #2223

New Contributors

• @lake-dunamu made their first contribution in #2174
• @harshinsecurity made their first contribution in #2078
• @AaronAjose made their first contribution in #2156
• @haoyu-haoyu made their first contribution in #2145
• @kajaaz made their first contribution in #2222
• @apetro2 made their first contribution in #2204
• @odupontt made their first contribution in #2216
• @jschnelder made their first contribution in #2213

Full Changelog: v2.8.2...v2.8.3

What's Changed from v2.8.3-beta4

• Revert #2237 — forkid wire-format change is a breaking p2p change by @lucca30 in #2248
• consensus: fix milestone-mismatch rewind deadlock by @kamuikatsurgi in #2246

Full Changelog: v2.8.3-beta4...v2.8.3-beta5

What's different from v2.8.3-beta3: #2237 ("core/forkid: include polygon-specific forks in wire forkid") has been reverted. It was a breaking p2p change on chains where polygon-specific forks activate above block 0 (Amoy, mainnet post-fork) — upgraded nodes computed a different forkid hash than non-upgraded peers and could not establish handshakes. The fix is correct in intent but must be rolled out as a coordinated network upgrade (gated on a future fork block). It will be re-introduced in a later release that way.

What's Changed

Features

• (feat): disable pending block creation loop via flag by @manav2401 in #2175
• consensus/bor, internal/cli: full grpc implementation by @marcello33 in #2194
• prefetcher: builder-phase prefetch + streaming worker pool by @lucca30 in #2192
• (feat): tracing support for state-sync transactions by @manav2401 in #2236
• security: harden gRPC server — disable by default, bind to localhost by @harshinsecurity in #2078

Bug Fixes

• ethapi: include pre-Madhugiri state-sync logs in bor_getLogs by @LarryArnault45 in #2155
• eth: stop dialing before waiting on handler shutdown by @LarryArnault45 in #2158
• core/state: fix GetWriteMapDump write-set output by @AaronAjose in #2156
• metrics, build: fix time.Tick resource leaks and oss-fuzz shebang by @haoyu-haoyu in #2145
• triedb/pathdb: fix exponential memory growth in preload BFS by @lucca30 in #2187
• eth: cancel milestone subscriber on shutdown by @kamuikatsurgi in #2199
• rawdb: recover witness size from filesystem metadata miss by @AaronAjose in #2200
• core/types: guard (*Header).GetValidatorBytes against short Extra by @kajaaz in #2222
• consensus/bor, miner: fix stale pending state for non-validator nodes by @cffls in #2183
• miner, consensus/bor: fix leaked-wedge family in worker state machine by @cffls in #2220
• miner: drop PeerCount==0 gate in mainLoop by @cffls in #2238
• consensus/bor: fix race in SpanStore.PurgeCache by @lucca30 in #2235
• Fix triejournaldirectory wiring by @jschnelder in #2213
• miner: disable tracer in vm.Config to prevent conflicts during block synchronization by @maoueh in #2206

Observability & Metrics

• metrics: fix ResettingSample Prometheus _count monotonicity by @lake-dunamu in #2174
• miner, consensus: more block building metrics by @manav2401 in #2228
• miner: format build-block log times as RFC3339Nano, gate on IsRunning by @kamuikatsurgi in #2239

Configuration & CLI

• internal/cli: enabled witness filestore by default by @pratikspatil024 in #2191
• templates: replace dead witnessprotocol with witness.enable hint by @apetro2 in #2204
• packaging/docs: replace deprecated rpc.batchlimit key by @odupontt in #2216
• p2p: add flag to disable snap/1 serving by @lucca30 in #2152

Chain Config

• Fixing amoy static peers by @sanketsaagar in #2209

Testing

• all: fix nightly race test flakes by @cffls in #2193
• core/vm: add hardfork precompile continuity checks by @pratikspatil024 in #2234
• miner: fix TestPrefetchRaceWithSetExtra deadlock by @wjmelements in #2233
• ethclient: bound tx indexing wait in tests by @LarryArnault45 in #2211

CI, Build & Chores

• build: bump Go from 1.26.1 to 1.26.2 to fix stdlib CVEs by @lucca30 in #2189
• build(deps): bump go.opentelemetry.io/otel/sdk from 1.40.0 to 1.43.0 by @dependabot[bot] in #2182
• backport v2.7.1 to develop by @pratikspatil024 in #2190
• eth/fetcher: refactor witness_manager to reduce complexity by @cffls in #2188
• Backmerge v2.7.2 to develop by @manav2401 in #2197
• Backmerge v2.7.3 to develop by @manav2401 in #2214
• ci: fix kurtosis setup/cleanup action paths by @cffls in #2223
• chore: pos workspace setup by @marcello33 in #2218
• backport v2.8.0 to develop by @pratikspatil024 in #2227
• docs, .claude: add hardfork rollout review guidance by @pratikspatil024 in #2229
• build: bump Go to 1.26.3 by @lucca30 in #2230
• build: bump x/net for govulncheck by @lucca30 in #2240
• chore: use Claude Opus 4.7 1M context in workflows by @kamuikatsurgi in #2241
• ci: remove claude github actions by @adamdossa in #2244

Backports merged from develop (new since v2.8.3-beta)

• v2.8.2 backport: miner — track env.size in commitTransaction & set maxBlockSizeBufferZone to 1MB by @cffls in #2245
• v2.8.1 backport: eth — cap GetWitnessMetadata request hash count by @manav2401 in #2243
• v2.8.1 backport: consensus, core, params — set TxContext for state-sync transactions by @manav2401 in #2243
• v2.8.1 backport: core, eth/protocols — ensure nil receipt inclusion in p2p response by @manav2401 in #2243
• v2.8.1 backport: core, eth/protocols — fix typo follow-up by @manav2401 in #2243

Reverted (deferred to coordinated upgrade)

• core/forkid: include polygon-specific forks in wire forkid by @leovct in #2237 — reverted; see note at top.

New Contributors

• @lake-dunamu made their first contribution in #2174
• @harshinsecurity made their first contribution in #2078
• @AaronAjose made their first contribution in #2156
• @haoyu-haoyu made their first contribution in #2145
• @kajaaz made their first contribution in #2222
• @apetro2 made their first contribution in #2204
• @odupontt made their first contribution in #2216
• @jschnelder made their first contribution in #2213

Full Changelog: v2.8.2...v2.8.3-beta4

Note: This pre-release was superseded by v2.8.3-beta4 after the inclusion of #2237 was found to be a breaking p2p change on chains with polygon-specific forks activated above block 0 (Amoy, mainnet post-fork). See v2.8.3-beta4 for the full changelog.

Full Changelog: v2.8.2...v2.8.3-beta3

Full Changelog: v2.8.2...v2.8.3-beta2

Full Changelog: v2.8.2...v2.8.3-beta

What's Changed

v2.8.2 contains a fix that prevents block producers from creating oversized blocks. This release is only required for block producers.

Full Changelog: v2.8.1...v2.8.2