Release candidate files for 1.58.0 are available at: http://boost.cowic.de/rc/ 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. This helps ensure the candidates build OK before we push them out to SourceForge. The files (and associated md5s) are: MD5 (boost_1_58_0_rc1.7z) = 609ea035fd3b9f1da110f640c9b8d1e6 MD5 (boost_1_58_0_rc1.tar.bz2) = 7edf680e2532a0370bce64e8e847d661 MD5 (boost_1_58_0_rc1.tar.gz) = 0e435db6a5963e58ffa8d7df49ab5846 MD5 (boost_1_58_0_rc1.zip) = a8d1761306a2ea020e92de53a5cae82d Thanks! -- The release managers P.S. Release notes are here: http://www.boost.org/users/history/version_1_58_0.html