As previously rumored, Facebook has just released version 5.0 of its app for iOS devices, bringing with it a complete re-write of the app. The new Facebook app for the iPhone and iPad has been "rebuilt so it's faster and easier to use."
Full release notes:
We've rebuilt the app so it’s faster and easier to use.
- Scrolling through news feed is faster than ever
- New banner lets you tap to quickly see more stories – no need to refresh
- Photos open fast and close with one downward swipe
- Instant access to your notifications