I think he started the rumour mill up himself to see whether he could generate any interest, should he abruptly decide he's not done with these characters.
I just came back from the wake; it was a very tasteful affair.
His attorney, Martin Galloway, has confirmed to me that any rights and properties relating to the aforementioned characters will revert back to the studio. And as we all know, studio president Jerry Gibson has always been a champion of these particular characters, so I think it's safe to assume we could see a fully-made feature as early as fall 2009.