I was looking at each of the cushions they had there (about 6 different ones) hoping to find a tag to see who made them, but unfortunately only one did, so the rest might have been custom made for the Hasbro office or this event.
The one that did have a tag on it was blue with an Autobot logo that was at kmart (I think) a couple of years ago, at the same time as their bed sets and blanket.