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macfarla merged 2 commits into from
Apr 21, 2026
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[CHANGELOG] add unreleased section #10286

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012ba9e
add unreleased section to changelog
macfarla Apr 21, 2026
ac262fc
Merge branch 'main' into cl-unreleased
macfarla Apr 21, 2026
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21 changes: 21 additions & 0 deletions CHANGELOG.md
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# Changelog

## Unreleased

### Breaking Changes

### Upcoming Breaking Changes
- RPC changes to enhance compatibility with other ELs
- Block number parameter in RPCs will only support hex values. Support for non-hex (decimal) block number parameters is deprecated.
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- This affects several RPCs, including `admin_logsRemoveCache`, `debug_getRawHeader`, `eth_call`, `eth_simulateV1`, `trace_call` and more.
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- Sunsetting features - for more context on the reasoning behind the deprecation of these features, including alternative options, read [this blog post](https://www.lfdecentralizedtrust.org/blog/sunsetting-tessera-and-simplifying-hyperledger-besu)
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- Proof of Work consensus (PoW)
- `--min-block-occupancy-ratio` is deprecated and will be removed in a future release
- Plugin API
- `PluginTransactionSelectorFactory.create(final SelectorsStateManager selectorsStateManager)` is deprecated for removal
- `--Xmax-tracked-seen-txs-per-peer` renamed to `--Xmax-tracked-seen-txs` (old name kept as deprecated alias will be removed in a future release)
- Besu will require Java JDK 25 to build and run in a future release.
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### Bug fixes

### Additions and Improvements


## 26.4.0

### Repository Migration
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