Although I'm sure they're going to bash Linux every chance they get, their main intent is probably one of these:
1. Showing off the latest release of Windows Services for UNIX, and how it makes it a little easier to put Windows servers in your *NIX network. They will pimp it as a way to ease the transition from *NIX to Windows, but I see it the other way around. Basicly Microsoft's overpriced semi-compliant cygwin ripoff.
2. Demonstrating .NET on Linux. They said it could be done, they will now prove it. They will also be sure to point out how much more cleanly .NET apps integrate with Windows than with Linux. 
		
		
	
	
Hopefully someone will get the booth next to them and show off Wine or Mozilla or something like that. 
