So what version of WM will SE Xperia run?

Recently, screenshots of Xperia running WM6.1 surfaced on major sites, however, the original source of WM6.5 rumours, Eldar Murtazin, insists that  while WM6.1 might be installed on some  devices, it still will go into trade with WM6.5. Million dollar quote here here (in russian).

I tend to trust Eldar, because he never lied to us before, and it is a well known fact that he has access to SE and Nokia upcoming models well in advance of their market launch.