Videos are prepared, airbrushed and angled to present the best possible perception to the end viewer. That is all I will say. The other things you mentioned are already on the BK5 ...hence this one, by the look of things, and going by the way Roland have released over the past few years....well, it is a pretty safe bet to say it is a bk5 with 76 keys and a couple of other things.

I would suggest that the keybed will not match the G70 ( which by the way is the same one used on the A-70 Controller )