werfu writes "Compiz 0.9.0, the first release of Compiz rewritten in C++, has been announced on the Compiz mailing list. See the announcement for more info."
Compiz has for years been one of my favorite ways to make Windows users envious, despite my (Linux) systems' otherwise low-end graphics capabilities. Besides the switch to C++ from C, this release "brings a whole new developer API, splits rendering into plugins,
switches the buildsystem from automake to cmake and brings minor functionality improvements."