The official Youtube page for Pinball Arcade has a bunch of new videos up...
Here are a couple, but there are more at the link above for all of the announced tables.
Ripley's Believe It Or Not & Black Hole (!!!!):
Can't wait for this...the Williams Collection from a few years back is still easily my favorite video pinball game ever. No release date yet but it says "early 2012" so I'd assume within a month or two.