According to Russian reports, STALKER creator and GSC boss Sergei Grigorovich has issued a statement revealing that the reason a new development team couldn't get the rights to the STALKER series in order to make a sequel - as only briefly alluded to earlier today - was because those rights have been sold to Bethesda.
So, we've had S.T.A.L.K.E.R., we've had S.T.A.L.K.E.R. Clear Sky, and now we've got S.T.A.L.K.E.R. Call of Pripyat. Won't running around the same palce for a third time seem a little, well, boring?