Is there a list of new functionality in 3.0?

I had read the changelog and obviously a lot of existing functionality has been improved. I'm asking about features that someone who used CI2.x wouldn't know about. Things CI does now that it couldn't do before. Something you'd say hey there's this entirely new concept that does xyz, you should read about that because it wasn't available in 2.2.

It seems that CI 3.0 is largely a better, fixed version of 2.x. I just want to make sure I didn't miss anything new.