It is, but this being San Francisco, it's more likely to be 1000 than 1200 as the Planning Dept. and TJPA originally proposed.
Also, Hines has paid for the RIGHT to build the tower (said money being used to build the terminal). As far as I know, they have no obligation to build it until they deem it an economically viable project. That may not be for some years now. And, in the meantime, I don't know of any reason they couldn't sell their entitlements. I think if they did, the buyer would have to use the same design, though.