The first release candidates for the 1.86.0 release are now available at: https://boostorg.jfrog.io/artifactory/main/release/1.86.0/source/ The SHA256 checksums are as follows: 2575e74ffc3ef1cd0babac2c1ee8bdb5782a0ee672b1912da40e5b4b591ca01f boost_1_86_0_rc1.tar.gz cd20a5694e753683e1dc2ee10e2d1bb11704e65893ebcc6ced234ba68e5d8646 boost_1_86_0_rc1.zip 413ee9d5754d0ac5994a3bf70c3b5606b10f33824fdd56cf04d425f2fc6bb8ce boost_1_86_0_rc1.7z 1bed88e40401b2cb7a1f76d4bab499e352fa4d0c5f31c0dbae64e24d34d7513b boost_1_86_0_rc1.tar.bz2 As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. -- The Release managers