DreamWorks dropped this on us last night: Check out the Shrek 4 teaser trailer — which sadly does not feature the series debut of music legend Paul McCartney. We were really looking forward to hearing his voiceover!

Shrek Forever After is set for release on May 21, 2010.

Synopsis: Shrek (Mike Myers) has become a domesticated family man. Instead of scaring villagers away like he used to, the grown-reluctant ogre agrees to autograph pitch forks. Longing for the days when he felt like a “real ogre,” Shrek is tricked into signing a pact with the smooth-talking dealmaker, Rumpelstiltskin (Paul McCartney). Shrek suddenly finds himself in a twisted, alternate version of Far Far Away, where ogres are hunted, Rumplestiltskin is king, Donkey (Eddie Murphy) is an intellectual, Lord Farquaad (John Lithgow) is still alive, and Shrek and Fiona (Cameron Diaz) have never met. Now, it’s up to Shrek to undo all of Rumpelstiltskin’s mischief in the hopes of saving his friends, restoring his world, and reclaiming his One True Love and family.