I just saw the press release – there is now a website for Virtools MP. It contains the video we already know with slightly better resolution and some more details – but not yet that extensive to satisfy the curiosity of existing Virtools Dev users.
Interesting aspects are: data is stored as XML which is probably much better for atomic handling, OO Behaviour-Graphs maybe similar in approach to the BG instancing that comes with Dev 4.1 , customizable build process, media processing, render slots (whatever this means), customizable culling, streaming of levels/stages (stage = scene?), advanced shadow system, gameplay templates.
A custom build and media processor is actually something we created in our company for DEV, too. It really boosts productivity! We use schematic scripting to implement the media processing and store media in special folders and with special tags in names. It allows the GFX teams to add new content of existing types without the need of a developer for assets integration.