I saw the non-transforming "oversized Actionmaster" Zarak (Scorponok) and Black Zarak listed on Amazon Japan.

They won't ship here, but it lets people know when (Oct 31st), how much (about AU$500), and how big and detailed it is (58cm tall & about 6kg)... in case you were wanting to buy one through other sources.

Just note that they aren't produced or released by TakaraTomy - they are licensed figures.