Boost version 1.30.0 has been released. The highlights include:

* Updates for Boost.Python, including better support for C++ polymorphism, and introducing Pyste, a front-end wrapping code generator which allows most C++ code to be wrapped entirely using Python. (http://www.boost.org/libs/python/doc/news.html)

* Filesystem Library added - Portable paths, iteration over directories, and other useful filesystem operations, from Beman Dawes.

* Optional Library added - A discriminated-union wrapper for optional values, from Fernando Cacciola.

* Interval Library added - Extends the usual arithmetic functions to mathematical intervals, from Guillaume Melquiond, Hervé Brönnimann and Sylvain Pion.

* MPL added - Template metaprogramming framework of compile-time algorithms, sequences and metafunction classes, from Aleksey Gurtovoy.

* Spirit Library added - An LL (unlimited lookahead) parser framework that represents parsers directly as EBNF grammars in inlined C++ source code, complete with semantic actions, ASTs and much more, from Joel de Guzman and team.

* Smart Pointers Library - many enhancements, intrusive_ptr and smart pointer programming techniques docs added.

* boost/assert.hpp, boost/current_function.hpp, boost/throw_exception.hpp, boost/checked_delete.hpp have been documented.

* Date-Time Library - several fixes and small additions including an interface change to partial_date.

* Function Library - added support for assignment to zero (to clear) and comparison against zero (to check if empty).

* Operators Library - now takes advantage of named return value optimization (NRVO) when available, from Daniel Frey.

* Regression Tests - Much expanded, plus a very nice summary page from Rene Rivera.

* Test Library - added new facilities.

* Many fixes and enhancements to other libraries.

See www.boost.org for more information.