Throwing Ice at the Fire
Charlie has a post on the "Death of NUnit", in the post Charlie looks at the releases, the NUnit road map and who else is in the .net unit test space (with a post to come on that). A lot of people are talking about MSTest\VSTS but the fact remains that NUnit like MbUnit has much more, for power you simply can't compare the two. I am keeping my cards close to my chest on whats in store for 2006 but I am certain that the unit testing in .NET will be really be shook up for the better, much better.
The NUnit roadmap is interesting to read, they are busy adding new asserts and features. Of course I am bias but much of what you see, exists in MbUnit (CollectionAssert, FileAssert and DB rollback attribute to name a few).