Considering we haven't even seen images of Arcee and Chromia yet, I'm not surprised they've been delayed. It's probably a good thing as it gives the movie stock time to get in and move a bit, rather than expecting retailers to be able to distinguish between two different lines and end up with them not ordering the other Generations stuff.

There is obviously a second "series" of non-movie Generations toys in the pipeline. We have also heard rumours of a leader Megatron which we haven't seen yet. It seems to me like Hasbro are just pushing those toys which should have made it out in Q1 this year but didn't because retailers were holding back for the movie into the second half of the Generations line.