Rockstar has told Eurogamer that it currently has no plans to show anything at E3, although that may not rule out announcements during the show.
The publisher also said, "we don't comment on rumour and speculation" when asked about rumours that more Grand Theft Auto IV downloadable content will be unveiled.
Not that Rockstar isn't busy, of course, with Red Dead Redemption due out later this year, work on LA Noire ongoing, and Max Payne 3 lined up for release at the end of 2009.
Then of course there's the second round of GTAIV DLC for Xbox 360, whatever form that takes.