David Coallier has posted about the progress that's already being made in the PHP Project - a new wiki that's been installed.
The wiki is of course not opened to everyone in the world (as wikis are usually a source of big mess) but only to developers that have any type of CVS access on the cvs.php.net server.
One of the first orders of business is moving the TODO list out from its current location and into the wiki, making it simple for anyone to check out what the language developers will be working on in the future.