I don't when the second wave was released, but wave 3 looks to be released in about a months time.

The three figures in wave 3 are:

Super Ginrai (Powermaster Optimus)
Godbomber (the extra trailer for the JP version)
Starscream (the first Decepticon in this series)

And the best bit - the Godbomber and Super Ginrai model figures can combine to form God Ginrai

1050yen each (about AU$13 each).