The release candidates for the first 1.74.0 beta release are now available at:
    https://dl.bintray.com/boostorg/beta/1.74.0.beta.1/source/

The release notes are not yet available.

The SHA256 checksums are as follows:
577a6b575ff2c227e14cce1b929c73d969475e58f3d2ab2901ad234f773bbd12  boost_1_74_0_b1_rc1.7z
ba09c72dc848e7c0904922967014d853897b5a634926c910cc3b1fd627c31605  boost_1_74_0_b1_rc1.tar.bz2
2ccdc39efa076822cf1b359f9449f9d07707f3e27a18b393297b25885a9ff45b  boost_1_74_0_b1_rc1.tar.gz
c267c450166e040a374eaddab5e583cef09f6c3fe96a4db826172d0315c38dd5  boost_1_74_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.

-- The Boost Release Managers