EA's big E3 press conference is happening right now, and they've announced a new expansion to the Sim-whatever universe for the DS and Wii. According to the press release sent out concurrent with the announcement, SimAnimals is a game in which "you are challenged to engage, touch, move and try to control more than 60 animals as you journey deeper and deeper into the forest." Basically, you try to cajole a bunch of wild animals into becoming friends with a big disembodied hand.
It's sort of like Nintendogs, but with lots of other animals. And vaguely creepier-sounding. SimAnimals is planned for a January release.