Regarding the topic title, it seems the only answer the question has received is a quote containing at least some information that is certainly out of date.
I presume, however, that it's still the best answer at this stage? I am absolutely set on buying DCS:Warthog, but only in a non-starforced version. If that version is steam then so be it- the big question for me is how simultaneously, or otherwise, the starforce/steam versions will be available at release.