Release Notes - v0.208.2

v0.208.2

Title: Improve pipeline reliability and Plutus V4 compatibility

Version: v0.208.2

This release makes out-of-order block processing more predictable, aligns Plutus V4 guard data with reference behavior, and validates full-width UTxO-RPC rational boundaries.

Improvements

• Improved out-of-order block handling by waiting for pending capacity before assigning sequence numbers, rejecting over-limit items before retention, allowing MaxPendingBlocks: 0 to disable the limit, and delivering fatal ErrPendingLimitExceeded errors without blocking. ChainSync now stops rollback after a failed drain and returns protocol.ErrProtocolShuttingDown during shutdown without invoking the rollback callback.

Compatibility and Breaking Changes

• Updated Plutus V4 required-guard map ordering so script credentials precede key credentials and same-type credentials sort by credential bytes, matching the reference behavior and making the order deterministic for scripts.
• Removed the concrete Dijkstra V4 subtransaction index from top-level and guarded child contexts by encoding it as absent. Scripts and tools that read this field must handle an absent value.

Additional Changes

• Expanded validation coverage for full-width UTxO-RPC rationals across Shelley, Alonzo, and Conway to confirm exact int32 and uint32 boundaries and reject out-of-range values in Conway voting thresholds.

Release: v0.208.2

Compare: v0.208.1…v0.208.2

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Docs authored by Doc Holiday