I just read about the announced Quest 4.0 features. They include
- COLLADA support (including ability to import at run-time)
- GUI Builder and GUI Widgets
- Weather System
- Landscape System
- Shadow System
- Wii Controller support
- Newton physics engine
- Object Orientation via Interfaces And Classes on top of channels. (Exposed members editable via a Grid GUI. Sounds a bit like "components".)
Souces: Newsletters: February , June and a Forum Thread
Unfortunately they still adhere to their method of mixing data and logic into one graph. The object-oriented-ness hasn't spread into the fundamentals of the product…