Vincent got his review unit so we should have a good review with professional calibration coming up soon:
From the unboxing video only thing really note worthy seems to be HDR400 True Black and HDR1000 is to lessen the aggressive ramping of ABL more than anything which would make it comparable to the peak brightness setting on the LGs I guess.
My order was canceled but I will still be spending Sunday with one for a client that got it. He has been breaking it in so it'll have over 100 hours on it for calibration.
I should have the video out Monday morning.