iOS: Facebook rolled out the new Timeline feature to all users last last week and updated the Android app to include the changes. Now the Facebook iOS app for the iPhone and iPod Touchhas also been updated to include timelines, friend lists, and other minor tweaks. An iPad version is promised in the near future.
Facebook reports that the app is faster and more reliable, but time will tell. If you rock an iPhone or iPod Touch, go ahead and check it out.
Facebook for iPhone is a free download from the iTunes App Store.