Let the tour begin:
1) Showcase Your Latest Photos
The most recent photos that you post to your Wall or photos that you tag your Page in will appear here. This area will not include any photos posted by your fans. To hide a photo, roll over it and click X.
2) Navigation Where People Expect It
Navigation links are now on the left, just like on people's profiles.
3) Show the Top Posts on Your Wall
You now have two Wall filters. You can show posts by your page and top posts from Everyone, a new way for people to see the most interesting stories first. As an admin, you'll have additional filters for viewing posts on your page. To set a default filter for your Wall, go to Edit Page.
4) Use Facebook as Your Page
You now have the flexibility to interact with the other areas of Facebook as a page.
- Get notifications when fans interact with your page or posts
- See activity from the pages you like in your news feed
- Like other pages and feature them on your page
- Make comments as your page on other pages
To try this new feature, you can click the link here or go to Account above and select Use Facebook as Page.
5) New settings
You can set defaults for your email notifications and how you post to your page - as yourself or your page. You can also select which featured pages appear in the left column. To manage your settings for email and posting preferences, go to Edit Page and Your Settings. To select which pages appear in Favorite Pages, go to Edit Page and Featured.
Learn more - http://www.facebook.com/help/?topic=upgradedpages
Facebook's announcement - http://www.facebook.com/note.php?note_id=10150090729064822&id=10381469571
Upgrade your Pages - http://www.facebook.com/pages/status
Additional Reading: Facebook Timeline Privacy Settings