Adobe has announced the collaborative editing tool Adobe Anywhere. You can check the less than 4 minute video on it at Adobe TV. Basically using the new Mercury Streaming Engine, media for an edit can now be kept centrally on a server, and be edited on a local network or anywhere with a good internet connection as long as you have a good CUDA video card to work with. And as you edit you can share you sequences and the cuts instantly show up at different ends.
A very exciting prospect for remote editing. In fact this could be HUGE! This way an edit house could keep media locally and still have editors working remotely. Talk about enhanced security!
Still think they need an iChat theater type component, so you can show what you are viewing.