With the news that Facebook is going to begin allowing developers to incorporate full streams into their applications, developers are scrambling to get their apps up to speed. This morning we got our first look at the upcoming new version of Seesmic Desktop, and now we’ve learned that Xobni, the popular Outlook plugin that helps make Email easier to manage, will be going live with a new upgrade beginning at 6 PM tonight. Because of the way Xobni is built users won’t have to download an upgrade either – all changes will be server side.

Up until now Xobni has included some basic Facebook contact information, including profile photos and status updates, but it wasn’t as comprehensive as your full Facebook news feed (you couldn’t see how your contacts were interacting with each other, for example). Now you’ll be able to see this information at a glance directly from your Outlook mail client, which is obviously far more efficient than having to manually check your Facebook page.

Unfortunately, Xobni is still available only on Windows machines, so Mac users are left in the dust.