Facebook will remove all App Profile Pages on February 1st, 2012.
Over the next few weeks, a banner will appear to admin’s at the top of the App Profile Page.
If you are an admin of an eligible Facebook Page (must be of the Product/App category and match the app name), you will be prompted with the ability to transfer Likes to this Page. Transferring Likes will give you the ability to publish updates to these users from your new Facebook Page as you do today.
For more details please click here http://developers.facebook.com/blog/post/611/