At today's Radical Studios panel, publisher Barry Levine talked about Kosinksi's summer plans while discussing Oblivion, the director's "illustrated novel" they plan to publish next year:
Joseph Kosinski is directing Tron 2, and last year he did amazingly well at [San Diego Comic-Con] where he showed that test and had 6000 people show up. This year, he's going to have a trailer, not of the entire film, but just what he's been shooting. He started shooting in April, and given his pedigree and what I know about the film and what I know about Joe—the film will be amazing. So he'll show that trailer there.
Probably not what Tron fans at NYCC would have wanted to hear - but at least we now know when to expect to see some official virtual Jeff Bridges.
NYCC: Radical Announces Project By "Tron 2" Director Joe Kosinski [Comic Book Resources]