Well I would've never guessed in a million years that Cameron is still trying to get this of the ground. Didn't get that he was actually that stoked about it. I hate the idea of retconing Alien 3 and bringing old Ripley and old Hicks back, but you never know. In the last few years, all the movies turned out quite different from what I expected. So if I think this isn't a good idea and that it'll never happen, maybe it does and it turns out great?
Whatever the case may be, I'm more than intrigued by this news.