There is a project in Nashville that may give us a good idea as to what this one will look like. The Nashville project is referred to as 19th & Broadway, and it has the same developer (Greystar Residential), same architect (R2L: Architects) along with the same uses and a similar footprint.
It features a tall residential tower and a shorter second hotel tower connected by the podium. The Austin project is basically designed the same way due to the slope of the site and a CVC. The shorter "tower" in Austin's project will include office along with a hotel because the Austin Symphony wants a new home, and this is their project.
Here's the Nashville version:
https://www.nashvillepost.com/busine...idtown-project
Here's the original vision for the site when it was known as Velocity Tower. It's not all that different from the Nashville project and from what we have seen from the AULCC postings for Symphony Square. The main difference is that the Austin tower will be over 100' taller.
https://www.crexi.com/properties/197...velocity-tower