I think this engine might cure me from the D3 engine.
They finally got rid of UnrealScript which is nice, but really it just feels like its more polished rather than ground breaking tech.
No, really not. It's a very rich development suite with a myriad of functions and availabilities to make life easier for game artists.
Stuff doesn't need to be ground breaking to be very good, which this looks to be.
Real time editing, seamless switching back into the game without any kind of compiling, being able to compile gamecode
while the game is running and seeing your changes real time, global illumination, colour bouncing, gorgeous tools for setting up animations and cinematics, true reflections, water displacement, a rich set of smart particle systems that Pixar could use 1-1 in any movie, etc..etc....
This is just very good stuff and it excites the hell out of me, for the first time in years. He was running through a room at 60 fps with a million particles in there, that's awesome.