I've just been watching the IIS 7.0 episode of the .NET Show. One of the new exciting features of IIS 7.0 for people who run their sites on a shared hosting environment are the new Delegated, Remote Administration options.
Essentially this will allow developers who do not have access to IIS on the box to use an IIS client tool to configure their site remotely over HTTP. This obviously relies on the hosting company to offer this functionality.
This has been a major bugbear for developers running their sites on IIS in the past in a shared environment. If set-up correctly it should allow hosting companies to save time and money by delegating some IIS functionality out to the site administrators.
I've recently moved hosting companies in order to get ASP.NET and the .Net framework 2.0, and I think that it will be big selling point for hosting firms. As far as I'm aware you will need Vista or Longhorn server to get IIS 7.0 however, so we may not see hosting companies offering this for a while yet.