Facebook has released a new version of its iPhone application that gives users the ability to check in to events. Version 3.4, released Monday, also now includes a map view for Places and the ability to unfriend Facebook friends in-app.

# The new event check-in functionality is housed within the events portion of the app.
# The app user can check in to nearby, upcoming events and tag their friends should they so choose.
# The map view for Places has been added to the Places section.
# Users can toggle between “Activity” and “Map” options to view checkins in the standard list view or switch to see them on a map.
# The app gives you the ability to unfriend your no-longer-wanted social network buddies