The official Foursquare client for Windows Phone just got updated to version 2.5. Aside from the usual fixes, the new version brings Mango support. That means fast app switching so that you are no longer presented with the screen that says Resuming. There’s also support for App Connect as well as secondary Live Tiles. If you don’t have the notification on your Marketplace Tile, fire up the application or just follow the source link below to update.