From the looks of it all, there appears to be a handful of items that were fixed with the latest version of the Foursquare app for BlackBerry. The fixes with the maintenance release include:
- Resolution of screen lock up issue after login on some devices
- Resolution of checkin results lock up issue on some devices
- Resolution of "send to twitter/facebook" not showing
- UI fix with viewing photos on a smaller device
- Landscape/Portrait rotational fix on some touch devices
- To update just head to foursquare.com/blackberry/alpha from your device.
So without any further interruption, user can download the maintenance release via the source link and continue to check into their favorite locations with the app – and not worrying about something going bad.
source: Foursquare via CrackBerry