A lot has changed since this thread was last bumped.
Austin will continue to have quite a few towers U/C heading into the Great Virus Recession. We have 14 300'+ towers with financing underway with demo, site prep or construction. Plus, we have a lot of other significant projects underway like Block 164, the courthouse, Hilton Garden Inn and the Capitol Complex. Although I wouldn't be surprised if one of the 14 on the list - The Avenue - took a pause after demo just because it's a hotel.
I think it's pretty safe to say that no more large hotels or projects with a hotel component will be breaking ground any time soon. I also think we're at the end of speculative office tower groundbreakings. But I think we could still see a couple of residential towers break ground. The likely candidates based on where they are in the permitting process are the Travis and the Linden. We were not going to see a lot of major groundbreakings during 2020 anyway just because a lot of the tallest proposals were not far enough along in getting City approval.