Foursquare has released an update to its previous version to support iPhone 4 and iOS 4. With the update you can view your friends avatar overlaid on the map and clicking on the picture will shows their current location. The new update also include faster app switching and improved artwork for the iPhone 4 retina display.
I don’t see any good improvement in the performance, but its slightly better than its previous version.
Foursquare’s official notes on the iTunes store
- View your friends on a map
- High resolution artwork for the iPhone 4 Retina Display
- Performance improvements and bug fixes