A quick update for the many who expressed interest in the Castor library at the "Logic Paradigm for C++" talk at this year's BoostCon and also folks on the dev mailing list when I polled for interest. Castor 1.1 that was recently released and it will form the basis for the version that will be proposed to Boost. http://www.mpprogramming.com/announce.aspx Among other things, version 1.1 enables support for Coroutines and Query Expressions in C++. There are a couple of videos describing 1.1 specific enhancements at http://www.mpprogramming.com/cpp/default.aspx#Videos Boost Porting: The initial Boost related work has begun (thanks to Zach Laine who has done pretty much all of the work so far). Besides incorporating user feedback and changes that make it conformant to Boost guidelines... my intention is to hopefully include a few significant enhancements. Volunteers welcome! Project sources are currently hosted at http://sourceforge.net/projects/castor-logic/ - Roshan Naik