The project leader for the Windows Template Library project up on SourceForge dropped me a note the other day. In case you are interested, the WTL project just released Beta 1 of WTL 7.5. Here are the links.
Project link: http://sourceforge.net/projects/wtl
Download link: http://sourceforge.net/project/showfiles.php?group_id=109071&package_id=117803&release_id=361783
Good stuff guys!