Just pre-ordered the DD and will monitor any possible DRM issues with Silent Hunter which has about 19minutes to go for download.

Regarding the IL-2 Sturmovik name it's not an issue IMHO. The name Sturmovik brings to mind a great flight sim of superior quality that has kept my interest for nine years. Newcomers will learn that as well. In fact even if IL2/CoD WAS simply an addition to the IL-2 series I would buy it in a heart beat because of the reputation associated with the name.