Marshall Clow
The second release candidate files for 1.56.0 beta 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.
Building Boost works with MSVC 2013 Update 3 RC as well as MSVC 2014 CTP 2. With MSVC 2013 Update 3 RC, building a real-world project works in release mode when using the Windows SDK 7.1A (Windows XP toolset). Using smart_ptr in debug mode still fails because of https://svn.boost.org/trac/boost/ticket/10183 Using asio with the updated Windows SDK 8.1 from Update 3 still fails because of https://github.com/chriskohlhoff/asio/pull/22