They've approved and released the site plan. The elevations are files 39, 40 and 41.
https://www.austintexas.gov/devrevie...erRSN=11077540
So...the height that I had seen before with a PDF that was posted to the city's FTP site, had the height listed at 248 feet to the main roof, and approx. 269 feet to the mechanical penthouse roof with 19 floors.
These elevations that were released most recently show it to be just 18 floors of office space and only 224 feet to the main roof and 242 feet to the mechanical penthouse roof. So it looks to me like they reduced it by one floor. It also looks like they did something to the garage levels, because their heights aren't the same anymore. In the original it listed the top garage level as 10 1/2, now it only goes to 10.