Actually, I can't see any improvements beyond environment map rotation, some interface tweaking, the anaglyphic mode (can't test, I don't have a pair of those silly glasses) and, well, not being a demo.
I'm not complaining, mind you. Right now all I wanted was to save an image larger than my screen, so it works for me. I can't wait to get my hands on some lights though.
And BTW, now that octane no longer crashes while dealing with big render targets, how do you scroll and zoom the render preview window?