Microsoft has really started pushing out these community sites (Channel9, On10, Port25, GotDotNet) and now they have one for IIS. Since I’d wager most of the implementations of ESRI’s server products are done with IIS, this might be a good site to bookmark/subscribe via RSS.
Heck I see you can even give IIS 7 a tryout even if you don’t have a MSDN Subscription.