According to the good people at Neowin, Microsoft has a few big announcements for Mobile World Congress, which takes place in Barcelona next month. Apparently, the company will be taking the wraps off a cloud-based syncing service called SkyBox, a MobileMe-like system which allows you to sync and backup your Windows Mobile phone OTA, though there's speculation the service might be extended to non-WM devices as well. The cats in Redmond will also apparently unveil something called SkyLine, an enterprise version of SkyBox, and will properly introduce SkyMarket -- its "mobile marketplace" (an App Store competitor). Most interestingly, however, Neowin is now claiming that those shots of a Windows Mobile interface we saw back in November that looked somewhat questionable are in fact actual pics from a forthcoming UI overhaul. The site goes as far to say it can "confirm" that the honeycomb interface seen in the photos are "genuine concept shots" of a new interface. As usual, don't place any bets on any of this -- but we'll be live and direct at MWC next month, so stay tuned.