There are some indications that certain OEMs might get to their first rollable phone release in 2021. However, according to a new leak, Samsung will not be one of them. Then again, the same new tip points to a "triple-folding" tablet from the OEM for next year, as well as its first transparent display phone.
https://www.notebookcheck.net/Samsung-will-launch-its-first-rollable-phone-in-2022-new-leak.511095.0.html