Microsoft will be making a big announcement next Monday, although we don’t know any details about it. But from the above update on FriendFeed by Robert Scoble, it seems it will be similar to the Chrome OS that Google announced today. It could very well be something based around their research project Gazelle:
Channel 9 has this great video on the Gazelle web browser project by Microsoft Research. It’s being constructed on an operating system architecture, which means improved security, resource handling and sharing.
Gazelle’s Browser Kernel is an operating system that exclusively manages resource protection and sharing across web site principals. This construction exposes intricate design issues that no previous work has identified, such as legacy protection of cross-origin script source, and cross-principal, cross-process display and events protection.