It opened last Tuesday, the 16th. We actually flew DAL-SAT on the last flight from the "old" gates on the 15th. Kinda bittersweet. Construction workers were removing signage to move to the new terminal.
For Whataburger fans, theres one in the new terminal. Have heard the Chinese restaurant is very good. Haven't gotten to fly through myself yet, but friends said it's a little bit if a trek from drop-off to the furthest gates, even more than before.