The first release candidates for the 1.72.0 release are now available at:

<https://dl.bintray.com/boostorg/release/1.72.0/source/>

The SHA256 checksums are as follows:

fcd8b598bc63ae7bbd3e72635d95b9d749ef65f4e5342c24445ea1fb9d417ac3  boost_1_72_0_b1_rc1.7z
f6a527a261e273bfd2b6161d359ab9fb53c1795239c696f501a62f575cd30bda  boost_1_72_0_b1_rc1.tar.bz2
8e591146d39e8cb45c74540aae26ae6321b1e83ab1b12e236dd117f93475ceb9  boost_1_72_0_b1_rc1.tar.gz
3425e7bfd49a6ad70aa7e82c1c740f7821eb58d14604b133be4dfbcdc0c58e3a  boost_1_72_0_b1_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.