New modules, supported by Microsoft, are now officially RTMd (RTWd?) and available for use with IIS 7.0.
Yay new WebDAV! Yay being able to enable it on specific parts of a site! Yay better!
Media Bitrate Throttling
Yay something about bandwidth for media files!
The Internet Information Services 7.0 (IIS 7.0) Media Pack – Bit Rate Throttling module provides the ability to throttle progressive downloads of media files (in which audio/video playback starts as soon as sufficient data has been buffered on the client) based on the content bit rate. For sites that deliver audio and video files that may not be watched in their entirety, this module could significantly reduce your media-related bandwidth costs. A secondary feature of the Bit Rate Throttling Module is that it can also be used to throttle non-media ("Data") file types at specified bit rates.
Don't Forget The New FTP Server While You're At It
I already mentioned this, but I'll list it here as a one-stop convenience (aww, aren't I nice?)
Replaces FTP6 (that shipped in the box) with FTP7: FTP with SSL, virtual hostname support, extensibility, right-click-and-add-FTP-to-a-website publishing integration... loads of cool stuff.