• Support for external fmtlib versions 10.x (#2694). Thanks @H1X4Dev and @mguludag.
• Better support for std::format (#2359, #2544, #2680, #2688). Thanks @eli-b , @sylveon and @bachittle.
• Added new qt color sink. Logs to QTextEdit widget with some nice colors.
• Update #include to a deprecated fmt header (#2545) .Thanks @kromain.
• Fixes and impovements to dup_filter_sink (#2549, #2563). Thanks @zydxhs and @zhuyadong.
• Fix unnecessary empty backtrace begin/end logs (#2568). Thanks @koldi.
• Fixed variable name in msvc_sink (#2573). Thanks @naddu77.
• Add system includes (SPDLOG_SYSTEM_INCLUDES) cmake option (#2575). Thanks @dpayne.
• Improve dequeue of the async queue (@2587, #2588 ). Thanks @alokpr.
• Fix tcp_client sink for FreeBSD (#2590). Thanks @segoon.
• Support linux/musl libc (#2589). Thanks @kraj.
• Support newlib C library configurations without tm_gmtoff field (#2600). Thanks @igrr.
• Fix type of event id in win_eventlog_sink (#2598). Thanks @Tagl.
• Fix -Wshadow warnings in spdlog::sinks::dist_sink (#2599). Thanks @robinlinden.
• Spelling corrections (#2606, #2732). Thanks @albert-github and @zencatalyst.
• Add sync() function to file_helper (#2343). Thanks @espkk.
• Add a trivial callback_sink (#2610). Thanks @maghorbani.
• Fix unexpected delimiter at start of line in to_hex formatter (#2627). Thanks @starsunyzl.
• Fix MinGW build issue on example (#2642). Thanks @zEuS0390.
• Add optional TID definition to the systemd sink (#2619). Thanks @chardin-cpi.
• Added apply_logger_env_levels() (#2648, #2649). Thanks @afshinpir.
• Support utf8 in msvc_sink (#2651). Thanks @Demonese.
• Better handling of utf to wchar (66407f5b48986d72a6f263ed7a576abebef9dcd6).
• Use catch v3 for tests (#2656, (#2659). Thanks @xvitaly and @seker.
• New kafka sink (#2655). Thanks @vbirds and @SpriteOvO.
• Fix os namespace in systemd_sink.h (#2668). Thanks @MyNameIsLame.
• Enable systemd_sink tests in linux pipeline (#2669). Thanks @MyNameIsLame.
• Fix stdout_sink_base::log's fflush() behaviour inconsistency (#2646). Thanks @25077667.
• Fix for missing pthread_threadid_np in macOS < 10.6 and PowerPC (#2715). Thanks @barracuda156.
• Fix ringbuffer_sink moving warning (#2722). Thanks @jamesruan.
• Update INSTALL doc (#2775). Thanks @7starsea.
• Fix warning in qt_sinks.h (#2781). Thanks @dayfixer.
• Remove IPv4 limitation from tcp_client (#2790). Thanks @Simon-Janos.
• Fix android sink when message is not loggable (#2801). Thanks @lucasrangit.

Special thanks to @tt4g for helping with community questions and issues.