It's not going to be a super tall.
Just ate dinner with a principal at the firm and asked him about this block. He said there are no plans and when I told him of this thread and a wish for a super tall, he said, point blank, "Hines won't build a super tall in Houston anymore because the economics do not work in the market." He then went on to gush about 609 Main and all of the praise and accolades that are flowing in as well as how tenants are liking it.
So, look for another 609 Main/BG Group tower.
I'm fine with that.