Yep I just saw this last night! I was kinda expecting/hoping this would come along this year. I already have a tirant 45 (from the "damn the man" promo) and wanted the 45 M to use in short config with my hk45c. And the tirant 45 is great once you have all the pistons for 45, 40, 9mm, MK23, fixed spacer... Except that switching it around for each gun when hot gets old fast. Thus grabbed the M to share pistons and reduce reconfiguration by 50%!!
Still waiting on a pre 41F can, hoping approvals will drop in time once they get over the mountain. Or HPA.