I remember reading (though I don't know where) that if X-Men 3 should not be made, a Wolverine solo picture will automatically be green lit. I've also heard (again, I can't provide a source) that this will be the last X-Men film, however, a Wolverine spin-off series will pick up from there. In both cases Hugh Jackman would, of course, play the title role.
I don't really care for Hugh Jackman. I really had this high standard of what Wolverine was and what Logan would be like, but Jackman only kinda got to the bottom floor, so to speak. I mean, he has the 'tude down, but sometimes I just didn't buy that he was the ol' Canucklehead.