- Breaking: new configuration file format, Serf added as a dependency for cluster awareness, and LuaJIT replaces Lua 5.1 for the CLI.
- Feature: cluster management APIs (/cache, /cluster), new CLI commands (cluster, status), multiple new plugins (syslog, loggly, datadog) and extended transformer capabilities.
- Bugfix & improvements: increased Admin API body size to 10 MB, proper handling of request/response transformations, JWT and OAuth2 enhancements, and numerous stability fixes.