Someone in Hong Kong has managed to acquire 3 pre-production prototypes, and was selling them on ebay for US$1,200 each!
(that's certainly cashing in on the past fad of fans who would snap them up to be the first to post up images)
Images can be seen here of the toy (only in robot mode).
Items have been "removed", but not the ebay listing, so the person must have found buyers who were willing to pay a fair bit, but didn't want to be known, in case Hasbro chased it up later.
This is the same person as the recent Robot Heroes Prototypes auctions, and has a lot of toy prototypes listed (at ridiculous prices)... but it is interesting to scroll through the things this person has available.
With so much stuff on hand, they have to be someone high up at Hasbro HK, or some HK business involved in pre-production mock-ups and prototypes.