I think you mean the first episode of the G1 cartoon, More Than Meets The Eye pt1.

I wouldn't rule out ever getting them (Jazz too) but I was disappointed they didn't do them in Siege. Here's hoping the third chaptor of the WFC trilogy goes back to Cybertronian designs, or at least gives us those three. Pretty sure all the other Cybertronian alt modes we saw in that first episode have been done in Siege.