WP8 OS surprises for MWC 2013 in Feb?

Anyone have any clues or ideas if MS are going to release some new features for WP8 at MWC? As impessive as WP8 is, not much changed from WP7.5 to WP8 funcationally...yeah, everything changed under the hood but feature wise there was not that much... With BB10 coming out, they need to announce something to take the wind out of their sails