from the JauntyJackalope/TechnicalOverview :
Known Issues -nouveau is available in Alpha-2 universe as an EXPERIMENTAL X driver for expert nVidia users only. We are accepting patches but not bug reports at this time. Regular users should stick with -nv for now.
what is the point of releasing the driver if you don't want bug reports for it but only patches?
If your -nouveau users are experienced enough to submit bugs then they would have used raof's ppa or upstream git version and they'd submitted the patches already.they wouldn't wait to test the jaunty's alpha 2 version of nouveau.
what i mean is that from my point of view, if something is not mature enough to handle bug reports yet then it should not be released, even in development cycle. i think of development releases as a way to interact with community and get their opinions,bugs, interests, patches but not only patches.
and btw i own an nvidia card and i really care a lot about having an open source driver for it. i haven't used nouveau since intrepid's development cycle but i will definitely give it a try (although i can't submit patches)
PS , the wiki here http://nouveau.freedesktop.org/wiki/UbuntuPackages should be updated to include also intrepid and jaunty
Add the sources.list entry specific to Gutsy or Hardy respectively.