The first release candidates for the 1.87.0 release are now available at: https://boostorg.jfrog.io/artifactory/main/release/1.87.0/source/ The SHA256 checksums are as follows: f55c340aa49763b1925ccf02b2e83f35fdcf634c9d5164a2acb87540173c741d boost_1_87_0_rc1.tar.gz af57be25cb4c4f4b413ed692fe378affb4352ea50fbe294a11ef548f4d527d89 boost_1_87_0_rc1.tar.bz2 f367a218d27b23b568956bacf56d08d2c1d9647211337136be8cac5cb2ff0828 boost_1_87_0_rc1.zip db6b7d77a2286ebe79d4aa7252c08b051d271fd8b013b6b18bc7a966552c1139 boost_1_87_0_rc1.7z 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