Nope. If had wanted to be a part of Trek again so badly, he had a chance to reprise the role on Enterprise, but it didn't work out, and I find it hard to believe he wasn't at least partly to blame for that. He's also made plenty of money off the books that tells how Kirk didn't really die after all, so if you REALLY hate how he died in Generations so much, you can enjoy those books.
I wouldn't mind too much if they have Shatner and Nimoy interact on the big screen one last time if it took place before Kirk fateful trip on the Enterprise-B. If they do it any other way, I doubt I'll care for it, and I fear it might detract from the story and feel forced.