Boost release 1.86.0 beta 1 is now available at: https://boostorg.jfrog.io/artifactory/main/beta/1.86.0.beta1/source/ The SHA256 checksums are: 6c3b6b6b1760090ebd658b764c9006d9579df2a20763ede356e059fe52989277 boost_1_86_0_b1.tar.bz2 cc0e5c0fb54ea8762c2eb9fbfd185cb8ccbe1ad33c218883f9438dbe2f9a795b boost_1_86_0_b1.zip cad677f5b746bd83c68131766554b56ebf40eb7ba94823526b03820db9dbc049 boost_1_86_0_b1.7z 82b59c0ca4d3b8bbf910ffdbbf535ef738fa1d648b8ba6f2608b516a58f89c55 boost_1_86_0_b1.tar.gz Release notes (still need updates): https://www.boost.org/users/history/version_1_86_0.html Please try the beta and report any problems you encounter. Thanks to everyone who contributed to the release. Thanks especially to Sam Darwin for his help with the tools, and figuring out what happend with RC3. -- Boost Release Team