v0.15.6

What's new

This version adds support for the pre-latest block concept — a block that has been finalized by consensus but whose commitments are not yet calculated. It acts as a preview of the next block, allowing faster access to the chain state to build the pre_confirmed state.

When the latest finalized block is N, the pre_confirmed block can now be built either:

• directly on top of N (i.e., pre_confirmed = N + 1), or
• on top of a PreLatest block at N + 1 (i.e., pre_confirmed = N + 2), if available.

Background

Previously, the pre_confirmed block was always fetched for latest + 1, requiring us to wait for commitments before proceeding.

Impact

This change allows us to fetch the pre_confirmed block earlier by removing the wait for commitments, resulting in access to a more recent state sooner and reducing transaction confirmation latency.

Full Changelog: v0.15.5...v0.15.6