The Facebook for iPhone version 3.4 update brings a number of significant new features.

Facebook for iPhone 3.4

- Added Map View for Places
- Added the ability to Check in to Events that you’re attending
- Added the ability to unfriend from the phone
- Improved News Feed
- Improved notifications UI

We continue to see social network app functions converge. Facebook for iPhone’s Map View for Places provides a Google Latitude-like view of where friends within nearby geographic areas are relative to you on a map. Note that Facebook’s map view only shows the location of you and your friends’ last check-in. This is different from Google Latitude which can show near real-time current location.

Via TechCrunch: Facebook For iPhone Gets Event Check-Ins, Maps, And Unfriending