Watching the TechEd keynote and Bob Muglia just announced that IIS will be supported as one of the roles for Server Core. This is great news for you web admins who want to reduce your attack surface, uptime, and footprint on an Internet facing web server.
If you couldn't make it to TechEd this year well you're still in luck, a lot of content, sessions, virtual labs, keynotes, podcasts, and documents can be found at this site:
sign me up! This is great news - I've been looking for additional ways to reduce my uptime on my internet facing servers. :)