The site plan which had been filed a while ago was expiring soon, and it has been renewed this week.
Also, the site plan was posted to the city's website for the utilities review and it included some numbers for the towers.
There's some discrepancy here, but Phase I is listed in the box to the left as being 595 feet with 422 residential units. Those numbers are listed as the same in the building's footprint on the site plan to the right.
Phase II is listed in the box to the left as being 595 feet with 422 residential units. The odd part is that in the building's footprint on the site plan to the right it lists the building as a 695 foot building with 147 units, but it also lists 280 hotel rooms. I'm guessing the 147 units are residential.
ftp://ftp.ci.austin.tx.us/ATD_AULCC/...avis_PLANS.pdf