Mobile World Congress is still almost a month away, and the rumors of who’s doing what are already starting to heat up.

According to Neowin, Microsoft is prepping a series of “Sky” branded products purposed with taking on Apple’s MobileMe and App Store offerings.

SkyBox: Over-the-air syncing of contacts, SMS, email, calendar items, and pictures.

SkyLine: The enterprise version of SkyBox, presumably with group device administration and the like.

SkyMarket: There are many thousands of applications for Windows Mobile – but finding them is a pain. SkyMarket is purportedly Microsoft’s answer to Apple’s App Store, Google’s Android Market, and the countless other on-device application distribution centers that have sprung up in the last year.