The new version of SPIP 2.1 is out. After a long wait, this new version brings huge changes.
This new version opens to the modularization of functionality in the form of extensions and plugins, as proposed by all the other CMS.
But Spip has also undergone other changes as an improvement of the cache, more security. It is also compatible with PHP 5.3 and includes the libraryJquery 1.4.2 and 2.8.2 pclzip.
It is now more flexible and more structured with an improved debugging.
A statement of this new version is available.