There is a sign in front of the Bank of America location in the lobby at 700 Louisiana that says they are permanently closing at 2 pm on June 7th, and opening the new location June 10th. I'd bet the building has to be finished by the 10th.
There is an article on Swamplot with the proposed redesign.
Swamplot Link:
http://swamplot.com/new-spaghetti-warehouse-owner-wants-to-crack-open-its-lower-levels-for-open-air-eating-area-shove-bar-above-it/2018-07-17/
Here's a link to a .pdf with more details on HAHC:
http://www.houstontx.gov/planning/Commissions/docs_pdfs/hahc/App_Materials_2018/july/901_Commerce_Alt_APP_materials.pdf