I checked a little more, and some more drilling permits were filed late last year. In addition to the building in my previous post, they include the larger 650,000 sq. ft. (~18 floors) office building proposed for the parking lot across from the State History museum. Here are the drilling locations:
https://abc.austintexas.gov/attachment/a...0cxBdmVJ4h2Ld3oJ4XGe0fDpwh6SwpcAWyKxAhsV