https://twitter.com/davesredist/status/1369891084642357250?s=20DRA now has 2020 census shapes with a cool new block level assignment feature. You can also convert maps made with 2010 shapes to 2020 shapes, which I've just tried with my Illinois map, and it worked tremendously, though naturally a few adjustments are necessary depending on your population deviation allowance. I'll leave it to you to read the article in full, but it essentially explains what that means and how to do it, as does the video below.
https://www.youtube.com/watch?v=4jyKawULHbg
