If you dig foursquare and don't want to miss out on any check-ins, you'll want to go ahead and fire up BlackBerry App World and take down the latest release. Marked as v5.5, this one comes to everyone without a change log so you're kinda on your own to figure out what, exactly has changed within. It's a little bit of jump from the previously available v5.2.3, so let everyone know in the comments if you spot anything that you think is new.
