Despite the expiry of the presumed 30-day period of Xbox 360 exclusivity, Bethesda's Pete Hines said that the company has not "announced 'Dawnguard' for any other platform" and that there was "no timeline for news".
"We have not announced 'Dawnguard' for any other platform, nor given a timeline for any such news," Hines tweeted.
"If we have news, I promise I'd tell you."
Further tweets suggest that an announcement is coming, but not until a later date: "I was simply stating that expecting/demanding something today is unfounded. Not that news is never coming."
Skyrim's 'Dawnguard' DLC launched for the Xbox 360 last month.
It includes a new plotline where players can choose to align themselves with an evil Vampire Lord or join the ancient order of Dawnguard to stop him.
As well as a new faction quest line, the pack features additional locations and the inclusion of crossbows as a weapon.
> 'Skyrim: Dawnguard' review (Xbox 360): Thirsty for more
> Read our review of Elder Scrolls V: Skyrim
Watch a trailer for 'Dawnguard' below: