Welcome back irblinx! Hope you've been keeping well?
The source for the new interface is still included as part of the project and is available for someone to complete if they want to. I just think that Mak has had to concentrate on other things for a while, and while the current interface (mainly the scripting window) has some issues the editor as a whole is excellent as it is. I'd rather have the physics and rotation currently being worked on by Akr than a new interface personally. Don't forget that GE hasn't been standing still all this time, you can now export to iPhone, iPod & iPad, which to me is huge!
Good to see you back