Version 0.9.3 of libcppa has just been released. The biggest change this time around is the switch from LGPL to the Boost Software License 1.0. If you are working in one of those companies that prohibit LGPL-licensed code, you are finally able to use actors in your day-to-day programming.
Due to the everlasting problems with the Boost.Context-based context-switching actor implementation, this features is now turned off by default. To re-enable it, use the --enable-context-switching option of the configure script. Since this feature is of limited use anyways, we consider removing it completely in a future version. We don't think it is worth the maintenance effort in the long run.