At this point, related to Su-26, there are news, but not from Luthier...
Carenado, the FSX/X-Plane addon company, has created Alabeo, another addon company, but focused in aerobatic planes and not specifying what simulator:
http://www.facebook.com/Alabeo
If this is going to be into FSX it will be a serious mistake. X-Plane should not be so bif mistake, but what I really would like is that kind of addons made into CoD; as Faucon, I also fly aerobatics in RL, and I'm also totally agree that no other simulator apart of Il2 series is closer to real aerobatics when we speak about FM.
PS: Faucon, I'm looking for your great videos and all of them were deleted on youtube, what happened?