Facebook just lunched a new version of their application for iOS device which is capable to show the timeline theme into your phone.
This new features of Facebook app works now only for iPhone and the support for iPad “coming soon“. You need to know that this function works only if the timeline is active on your account. If you want to known how to change your profile in Timeline look read this doc.
In version 4.1 of Facebook application for iOS devices the Timeline features is not the only new feature. In this version you can access the friend lists, subscribers and subscriptions, a faster and better performance. Also, with version 4.1 the photos are easier to view, upload and comment on.
This application is free and can be downloaded for App Store.