TFormers.com has posted a list of Transformers toys from Amazon Japan. Most are known but there is one addition to the toy list that is new, called Chromia. Chromia (wiki) is a female character that goes back to the G1 days even though only appeared briefly in one of the episodes along with Elita-1. It provides additional evidence that one of the three bikes currently collectivity called Arcee might be three individual characters. Or it could simply be a repaint of the Arcee from the first movie's toy line.
You have to love the Japanese class naming conventions for their toy classes as it makes it so easy to keep track of a collection and much improved over the mess of the stateside method (which is no method). Hasbro should consider copying it. It is something that would encourage collecting (and therefore purchasing) of their toys. Let’s face it there are a lot of collectors and kids who lose track of what they own but if they knew they had RA-01 to 06, they would be that more likely to "complete" the collection by getting the rest of the numbering. At the very least they should try it.
The list, with links and release dates is here.