We attended the Future of the Server Room Tour in Calgary a while back.
Our post conference take: TechNet: Future Of the Server Room - Longhorn/Server 2008, SBS, & SBS Cougar.
Rodney Buike has just posted information including the most popular questions (text messaged or e-mailed) and their answers, as well as some great resources on the Canadian IT Pro Blog: FoSR Interesting Q&A.
One thing he pointed out was a free PowerShell book that we can download from Microsoft: Free PowerShell Book (Zipped PDF with registration required).
There is also a link to the demo files: FoSR Demo Files (Zipped file).
And, a link to the Microsoft TechNet Command-line Reference.
The demonstrations on this tour were some of the most in depth into the new OS that we have seen to date. So, we suggest having a look into Rodney's post and the current Longhorn/Server 2008 beta. It will be well worth your while.
Microsoft Small Business Specialists