The release candidates for the 1.68.0 release are now available at:
<https://dl.bintray.com/boostorg/release/1.69.0/source/>

The SHA256 checksums are as follows:
af05616f71006f97833e130aad886c96136457511ace4b5496d6566e69cbe0ca  boost_1_69_0_rc1.7z
8f32d4617390d1c2d16f26a27ab60d97807b35440d45891fa340fc2648b04406  boost_1_69_0_rc1.tar.bz2
9a2c2819310839ea373f42d69e733c339b4e9a19deab6bfec448281554aa4dbb  boost_1_69_0_rc1.tar.gz
d074bcbcc0501c4917b965fc890e303ee70d8b01ff5712bae4a6c54f2b6b4e52  boost_1_69_0_rc1.zip

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 Boost Release Managers