Microsoft's own Windows Phone....Surface Phone?

There have been rumors lately that Microsoft is in the final stages of testing it's very own Windows Phone device, as some might call it, the Surface Phone. It would be something like the Google Nexus, where MS would sell this unlocked phone directly from WindowsPhone.com. I think it's a good idea, but does Microsoft really need this? They have GREAT brands on board such as Nokia and HTC, so why endanger their sales?

Before I was absolutely sure I wanted a Lumia 920, but now I'm just confused....should I wait and see if the rumors are true or go ahead with the Nokia? What are you gonna do/would do?

The rumour comes from WPCentral.