According to the "State of University City 2023" report on page 31, Two and Three uCity Square are in the works. Both towers would bring a combined 1 million square feet of commercial research complex (with ground floor retail) that is in design phase and aiming for a 2024 groundbreaking. There is a rendering which shows what these buildings may look like.
https://issuu.com/universitycity/docs/the_state_of_university_city_2023_web?fr=sOWE3MzU5OTQ4MjI