Here is an excellent article on the future of SARS-CoV-2.
TL;DR: we can expect it to get more contagious, and we don’t really know where the wall will be on that, but there is one.
We can expect it to continue to evade prior immunity (which is a different thing), and the wall on that is much further away.
We don’t know whether it will get more or less severe.
Notably absent from the article is any prediction of long term effects. For example, polio has only about 1/10th the immediate death rate of COVID, but about 30% of recovered people get some level of paralysis 15-30 years later. (Disclaimer: we have no reason to believe it acts like polio, but it already doesn’t act like many other coronaviruses, which do not really have long term effects.)
