Microsoft has The Zune HD’s 720p output will allow users to feed high-def video to their TV via a dock. The company says that its Zune-branded video service will replace the Xbox 360’s current Xbox Live marketplace for TV and movies. More information regarding the Zune’s Xbox integration and presumably other aspects of Microsoft’s latest attempt at an iPod-killer will be available during E3 next week. For now though, it’s nice to have official recognition, some specifications and an idea of when to expect the device.