They must not have the box finalized yet. That might point to an April announcement if they haven't done the thermal cooling yet.
Or maybe they'll just pull a Sony and show the features without the actual console itself.
The first posting is definitely Kinect 2. Like...seriously. I bet design for it is essentially done and ready to be shown off by now.
I don't doubt it. They have a number of postings for kinect manufacturing-related jobs:
http://www.microsoft-careers.com/jo...ct-Development-(827416)-Job-WA-98052/2439888/
http://www.microsoft-careers.com/jo...re-Xbox-Kinect-(827845)-Job-WA-98052/2455793/
http://www.microsoft-careers.com/jo...re-Xbox-Kinect-(827868)-Job-WA-98052/2455816/
http://www.microsoft-careers.com/jo...ardware-Kinect-(827411)-Job-WA-98052/2439846/