Looks like Nikhil let the cat out of the bag.  There is an awesome WebMatrix refresh in the works, and you can all get your hands on it soon.  Great new features, lots of bug fixes, and more.  I'm excited!  His team has done some amazing work.  He's posted a screen shot and says he'll be giving away some secrets in the coming days, so I won't steal his thunder.  I don't deserve to! Keep an eye out though.