Probably GPS integration so all your Facebook friends can see where you are all all times. Not that this wasn't already available for Android / iOS for other commercial and non commercial reasons (carrierIQ).
[citation][nom]slomo4sho[/nom]Facebook integration... as if privacy wasn't already an issue with android.[/citation]
Just so you know iOS already has twitter and facebook integration, every action that relates to them requires confirmation, i am almost entirely certain the same will be for android. Why would they risk their public image by not doing so? and anyway HTC wouldn't allow it.