On Sat, Dec 9, 2017 at 6:14 AM, Daniel James via Boost-users <boost-users@lists.boost.org> wrote:

The release candidates for the 1.66.0 release are now available at:

<https://dl.bintray.com/boostorg/release/1.66.0/source/>

The in progress release notes are:

<http://www.boost.org/users/history/in_progress.html>

Library documentation is available at:

<http://www.boost.org/doc/libs/1_66_0/>

The SHA256 checksums are as follows:

c9d29486dd12f19d321da65eb5f0a157ec0f0edfd4701ade48c644310c8f0676
boost_1_66_0_rc1.7z
6232f7e7873b2d1f112fb62c726f7066e9a7e0643ed2aac7d31d20bf5749fbc0
boost_1_66_0_rc1.tar.bz2
30ad6d1c7380d6e6a87ce1bc54388ab957de67a2e8fa44dd3c106eafad0f6ac2
boost_1_66_0_rc1.tar.gz
cd2c64f243c89e04329e94f3b803f0744171b44fee7a8b4e3256b3a625dcbd1c
boost_1_66_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.

msvc-8.0    32      X       X       X
msvc-8.0    64      X       X       X
msvc-9.0    32      X       X       X
msvc-9.0    64      X       X       X
msvc-10.0   32      X       X       X
msvc-10.0   64      X       X       X
msvc-11.0   32      X       X       X
msvc-11.0   64      X       X       X
msvc-12.0   32      X       X       X
msvc-12.0   64      X       X       X
msvc-14.0   32      X       X       X
msvc-14.0   64      X       X       X
msvc-14.1   32      X       X       X
msvc-14.1   64      X       X       X

Compile means that the b2 command completed without errors
Link means that visual studio was able to link a sample executable to a library (libboost_thread-vcXXX-mt[-gd]-1_XX.lib)
generated
Execute means that the linked program executed without errors.