Yeah.. i actually talked to the guys trying to build it about the status of it and everything and they dont have any permits or anything to build it yet... nor do they have a solid place where theyre going to build it.
They want Morgan Hill because so many of the east bay, penninsula, and North Bay hills are protected by regional parks, and they cant build there, Also, its right out of San Jose, so its not a big distance away from anything. They've also looked at areas near Sears Point, and near Livermore, but nothing's come together enough unfortunately.
The good thing is they've planted the seeds for such a thing and it's going to happen soon, but yeah... it will for sure be a few years.
as for a place near roseville, i havent heard of such a thing... nor would that make much sense because there arent many hills around there...