Certain issues that cropped up with the 1.33.0 release that necessitate a 1.33.1 release. 1.33.1 will be for safe bug fixes to 1.33.0 only, focusing on critical issues such as the already-addressed shared_ptr problem. There are two major issues we need to resolve before we can roll a release candidate of 1.33.1: - Include order dependencies in the Serialization library - GCC 4.0 type_info problems This is also a good opportunity to work in support for three compilers that are performing reasonably well now and should be supported by Boost: - Tru64 CXX - Apple GCC 4.0 on Tiger - Intel 9.0 on Linux We'll prepare the release candidate from the RC_1_33_0 branch, hopefully within a week or so, depending on the resolution of these issues. The release candidates will be available for much longer before the final release, up to a month or so, to root out any remaining issues. No new libraries or features may be added to the RC_1_33_0 branch; they should go onto the main branch, and we'll merge fixes from RC_1_33_0 back once we've released. Doug