Xbox 360 gamers hoping to download a fresh slice of Grand Theft Auto IV action this Christmas could be disappointed. Game developer Rockstar is unsure if downloadable content (DLC) for the title will be released this year after all.

GTA IV DLC is exclusive to the Xbox 360 and thought to consist of two chunks. Little’s known about content of either DLC package, so all we can hope for is a selection of engaging storylines and juicy new weapons.

It was initially said that the GTA IV DLC would be released this autumn, but Rockstar's publisher, Take-Two Interactive, shot that one down earlier this year by pushing the launch back until this month.

However, Rockstar’s Creative VP, Dan Houser, recently told entertainment paper Variety that he’s unsure if the DLC will appear in 2008.

Houser said that Rockstar hopes to be able to announce a DLC release date “in the next few weeks”. He admitted that the firm’s “more focused on quality than dates”, but stressed that development is proceeding well.