According to movie website Lackluster Emporium, a copyright pre-registration for DreamWorks Animation's Shrek Goes Fourth has been released.
The site hints that this may be the first look where the studio is headed with the next installment in this wildly-popular franchise:
After challenging an evil dragon, rescuing a beautiful princess and saving your in-laws' kingdom, what's an ogre to do? Well, if you're Shrek, you suddenly wind up a domesticated family man. Instead of scaring villagers away like he used to, a reluctant Shrek now agrees to autograph pitch forks. What's happened to this ogre's roar?
Longing for the days when he felt like a "real ogre," Shrek is duped into signing a pact with the smooth-talking dealmaker, Rumplestiltskin. Shrek suddenly finds himself in a in a twisted, alternate version of Far Far Away, where ogres are hunted, Rumplestiltskin is king and Shrek and Fiona have never met. Now, it's up to Shrek to undo all he's done in the hopes of saving his friends, restoring his world and reclaiming his one True Love.
Shrek Goes Fourth is slated for May 21, 2010 release.