There are no problem whatsoever with the new hotfix, the current version of the Stand-Alone Addon Manager supports it, and if you install any FSDT product now, you'll get it automatically.
@rvlasek
If it didn't work for you, so you were mislead thinking we still don't support 12944, it's because you haven't updated the Addon Manager after applying the P3D Hotfix, which should be done EACH time there's a new build of the sim. An user installing a product now, won't have this issue.