New Features

• Add stream consumer group lag tracking and reporting (#9127)
• Add API for functions and eval Lua scripts to check ACL explicitly (#10220)

New user commands or command arguments

• COMMAND GETKEYSANDFLAGS sub-command (#10237)
• INFO command can take multiple section arguments (#6891)
• XGROUP CREATE and SETID: new ENTRIESREAD optional argument (#9127)
• XSETID new ENTRIESADDED and MAXDELETEDID optional arguments (#9127)

Command replies that have been extended

• XINFO reports consumer group lag and a few other fields (#9127)
• XAUTOCLAIM returns a new element with a list of deletes IDs (#10227)

Potentially Breaking Changes

• X[AUTO]CLAIM skips deleted entries instead of replying with Nil, and deletes them from the pending entry list (#10227)
• Fix messed up error codes returned from EVAL scripts (#10218, #10329)
• COMMAND INFO, Renames key-spec "CHANNEL" flag to be "NOT_KEY" (#10299)

Performance and resource utilization improvements

• Reduce system calls and small packets for client replies (#9934)
• Reduce memory usage of stale clients (#9822)
• Fix regression in Z[REV]RANGE commands (by-rank) introduced in Redis 6.2 (#10337)

Changes in CLI tools

• Adapt redis-check-aof tool for Multi Part AOF (#10061)
• Enable redis-benchmark to use RESP3 protocol mode (#10335)

Platform / toolchain support related improvements

• Fix OpenSSL 3.0.x related issues (#10291)

INFO fields and introspection changes

• COMMAND INFO key-specs has new variable_flags flag (#10237, #10148)
• INFO stats: add aof_rewrites and rdb_snapshots counters (#10178)
• INFO stats: add reply_buffer_shrinks and reply_buffer_expends (#9822)
• INFO modules: add no-implicit-signal-modified module option (#10284)

Module API changes

• Add RM_SetCommandInfo API to set command metadata for the new COMMAND introspection features and ACL key permissions (#10108)
• Add RM_KeyAtPosWithFlags and RM_GetCommandKeysWithFlags APIs (#10237)
• Add getchannels-api command flag and RM_IsChannelsPositionRequest, RM_ChannelAtPosWithFlags APIs (#10299)
• Change RM_ACLCheckChannelPermissions and RM_ACLCheckKeyPermissions APIs (released in RC1) to take different flags (#10299)
• Fix RM_SetModuleOptions flag collision. Bug in 7.0 RC1 header file, modules that used OPTIONS_HANDLE_REPL_ASYNC_LOAD will mess up key invalidations (#10284)

Bug Fixes

• Modules: Fix thread safety violation when a module thread adds an error reply, broken in 6.2 (#10278)
• Lua: Fix Eval scripts active defrag, broken 7.0 in RC1 (#10271)
• Fix geo search bounding box check causing missing results (#10018)
• Lua: Add checks for min-slave-* configs when evaluating Lua scripts and Functions (#10160)
• Modules: Prevent crashes and memory leaks when MODULE UNLOAD is used on module with a pending timer (#10187)
• Fix error stats and failed command stats for blocked clients (#10309)
• Lua/Modules: Fix missing and duplicate error stats for scripts and modules (#10329, #10278)
• Check target node is a primary during cluster setslot (#10277)
• Fix key deletion not to invalidate WATCH when used on a logically expired key (#10256)
• Sentinel: return an error if configuration save fails (#10151)
• Sentinel: fix a free-after-use issue re-registering Sentinels (#10333)