- Fixed a startup panic regression caused by zero‑byte `tav.idx` files; users can delete those files as a workaround.
- Added new Left/Right subject mapping operations and a `/expvarz` monitoring endpoint, plus numerous JetStream and Raft performance optimizations.
- Resolved multiple deadlocks, race conditions and other bugs in stream handling, consumer ack logic, and WebSocket shutdown.
Release v2.10.16
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Added Leafnodes support with a configurable dial timeout option for high‑latency links
Upgrade to Go 1.25.12 and bump critical dependencies (klauspost/compress v1.19.2, golang.org/x/crypto v0.55.0).
Decoupled Raft transport and increased disk concurrency (now configurable) with several JetStream performance and memory optimizations;