The American Statesman has an article on this stating that construction will begin next month.
GROWING RAINEY: Work soon to start on 44 East Ave., the Rainey Street district’s newest high-rise
https://www.statesman.com/news/20190...west-high-rise
This area of downtown is going to have a handful of 50+ story towers in the next few years. There are at least 6 towers ranging from 50 to 60 floors in this area in various stages of development.