I know, I know....nobody knows and those who do won't say. The answer is "probably not" I'll bet. Just found myself wishing for one of these earlier today and discovered that it exists, just NAINA.
Knowing Festool USA, I'd say don't hold your breath.
You could always get the CT36 AC and then order a CT26 tub as a spare part, and swap it out. Maybe you can find somebody who wants to swap out his 26 tub for your 36.