• Bump bundled {fmt} library to 12.0.0
• Use std::getenv #3414 by @kfeng123 in https://github.com/gabime/spdlog/pull/3415
• Remove unnecessary and inconsistent "final" from color sinks by @vadz in https://github.com/gabime/spdlog/pull/3430
• Fix ringbuffer sink for zero buffer size by @gabime in https://github.com/gabime/spdlog/pull/3436
• Add option to override CMAKE_DEBUG_POSTFIX by @joshuachp in https://github.com/gabime/spdlog/pull/3433
• Update README.md by @yalov in https://github.com/gabime/spdlog/pull/3437
• Added timeout for TCP calls such as connect, send, recv by @LowLevelLore in https://github.com/gabime/spdlog/pull/3432
• Run tests in the order they are declared by @xvitaly in https://github.com/gabime/spdlog/pull/3451
• Remove the fileapi.h include in os-inl.h by @MasonAngelio in https://github.com/gabime/spdlog/pull/3444

Full Changelog: https://github.com/gabime/spdlog/compare/v1.15.3...v1.16.0

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