Titan Pack for Unreal Tournament III has been delayed two weeks (the PC version is still out today). According to Epic's Steve Polge, it's been pushed back to March 19 due to a snag in the certification process.
It's not a total loss. The good news is that the PS3 version has been patched today to include Trophies and split-screen multiplayer -- both were originally slated to release alongside the Titan Pack. Hopefully, Trophy hunting and split-screen gameplay will keep you preoccupied for the two-week wait.