- Add QueueSubscribe permissions and enhance Leafnode authentication (multi‑user, credentials, loop detection, daisy‑chaining).
- Introduce server name configuration, expose account info in /connz, and improve gateway reply handling and graceful shutdown.
- Fix numerous stability issues: duplicate service import rejection, wildcard stream import panic, route subscription leaks, RTT reporting errors, and Windows process‑name trimming.
Release v2.1.2
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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;