Microsoft's Facebook page provides you a look at WP7's integration of Facebook
But if you want to get a small tasting of how the homescreen of your future device will look, you can simply head on over to Microsoft's Facebook page where it'll provide you a good demonstration of how your Facebook pictures and contacts will populate on the homescreen. Sure we've seen it in the flesh and looks quite amazing, but it'll be even sweeter when you're able to see your very own Facebook stuff on there.
So if you're curious at all, you can simply create your own personalized Windows Phone 7 demonstration – and also get ready with what to expect when you get a handset in the flesh.
source: Facebook via WPCentral