It talks about the lack of continuous integration and the ability to schedule builds. It also talks about lack of a gui editor for build definitions. I think it's fair to say that TFS Build is the weakest of our "out of the box" feature experiences. It does a good job serving as an integration point - pulling together data from version control, work item tracking, testing, the build process and populating the warehouse. However, much of it is manual. Build is one of our biggest areas of investment in Orcas - including better extensibility, continuous integration and lots of other features.
The emphasis on the last part is mine, of course, since I didn't want anyone to miss it. CI and other significant enhancements to Team Build are alive and kicking, and we are really excited about it. And when we say CI is in Team Build for Orcas, we're not just talking about bolting on some add-on. It's a first-class part of Team Build.
If you care about these features, it will be really important to use them and give us feedback when they show up in a CTP (I don't know when that will be). The sooner you give us feedback after the release of a CTP or beta -- and this is true across the product -- the more likely it is that we can make changes to address your feedback.
Brian ends the post by mentioning his TFS roadmap, which he intends to publish by the end of the year. He has sent it around internally, and it contains a fair amount of detail. There's lots of good stuff to talk about in the near future, so keep an eye out for it.