Last November we learned that Plymouth would replace USplash in Ubuntu, but the official graphical boot splash screen change wouldn't come until Ubuntu 9.10 (a.k.a. the Karmic Koala). However, for those not interested in trying out Fedora to see Red Hat's Plymouth, there is a http://ubuntuforums.org/showpost.php?p=6892088&postcount=83">Jaunty Plymouth PPA plugin development tutorial on the http://ubuntuforums.org/">Ubuntuforum.org posted byred_team316.
The Phoronix recently reported that new work has entered Plymouth, includes various fixes, an improved layout of the help output, and command line parsing support for the Plymouth daemon. Support was also added to Plymouth for a one-time animation helper and a simple progress sequence helper, both of which will help designers and developers construct new Plymouth boot plug-ins. In fact, Plymouth has now gained a glow plug-in. This plug-in flips through a series of images until the progress reaches 90% completion, and then at that point it runs through the series of images as an animation.
This new Plymouth work -- plus more work we anticipate ahead -- will find its way into Fedora 11 and Ubuntu 9.10, but it has now yet landed in this PPA for Jaunty.
Tutorial here: http://ubuntuforums.org/showpost.php?p=6892088&postcount=83