The US Copyright Office has revealed another pair of new episode titles:
176 - Super Evil Aquatic Villain Team Up Is Go! / Chum Fricassee
I think the first one is the Man Ray and Plankton episode we heard about at the 2011 Comic Con.
"SpongeBob SquarePants is listed for a whopping 241 episodes. The show was already renewed for a ninth season of 26 episodes, taking it to 204 total; therefore, season 10 will likely have 37 episodes. This just makes Nick’s longest running series even longer!"