The Xbox version number in the system UI for the latest available patch is currently 1.0.0.5. You can verify that you have that version by pressing the Menu button while the game is highlighted on the Xbox home screen, selecting 'Manage Game and Addons' - from there there should be a spot showing 'Version'.
A new update is with Microsoft at the moment, it should be available next week, however the exact timing is out of our hands.