A slightly updated version of http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2615.html was accepted at the C++ committee meeting last week. It provides clocks, time points, and time durations for the C++0x standard library, and slightly modifies the threads interface already voted into C++0x to use these features. The only change in the version of the proposal actually voted in, IIRC, was to leave identity alone. The final document will appear in the post-meeting mailing in about two weeks. Although these clock and time features evolved from Boost Date-Time, the actual realization is quite different. So we've got a transition that has to be managed. I'd personally like to see that transition occur quickly, both because Boost.Threads depends on these features, and because I can now bring forward an improved Boost.Timer based on these features. One suggestion is for Boost to provide an implementation of the headers to be added to C++0x, and then to use those headers in the various Boost libraries that need them. But I haven't thought it out in any detail. How should we proceed? Comments? Ideas? Suggestions? --Beman