There is a rumor floating around that Apple may be planning to launch the Apple TV 3 this March alongside the iPad 3.   Marc Gurman of 9to5Mac reports:

We’ve been hearing that supplies of the Apple TV are severely constrained, but it’s hard to see a reason for this besides an imminent refresh. We’ve been hitting hard with evidence for the past few months that suggests a new Apple TV is in development, and what better time to launch it than alongside the latest and greatest mobile iOS device?

The Apple TV 3 is rumored to have 1080p content made possible by made possible by the Apple A5X (SoS) or the Apple A6.  (most likely whatever is shipped with the iPad 3.)

There are a few questions that come to mind with the possible release of the Apple TV 3.  First of which would be, how much 1080p content Apple will have available on iTunes to accompany the launch?  And second how a March release of the Apple TV 3 would effect the possibility of us seeing a full on Apple iTelevision anytime in the near future?

The current Apple TV 2 was announced back in September of 2010.  Rumors of the Apple TV 3 have been floating around since well before the 2011 holiday shopping season.

Source: 9to5Mac