A detailed site about iis has been launched. This site home page contains the information of recent product iis 7.
Some of the IIS 7 Features are
Minimize patching and security risks with fine grained control over Web server footprint
Implement powerful Web solutions rapidly with a new extensibility framework
Go to market faster with simplified deployment and configuration of applications
Reduce administrative costs by managing Web infrastructure more efficiently
Reduce Web site downtime by quickly resolving faulty applications

It also contains the detailed information of previous version iis too.