There are standing-up-to-peer-review study results out that various COVID variants are more infectious and more lethal; there is not yet a variant which evades the current vaccines, though the measurable decrease in vaccine efficacy suggests that such a variant is possible. Various variants are headed at being more than half the COVID cases everywhere the disease has not already been extirpated.
There are a couple of reported events -- not tendencies, emphatically not study results -- where vaccination cures someone's Long Covid symptoms. That in turn suggests that Long Covid is indeed a case of someone's immune system being unable to entirely clear the virus.
Since there's an existing suspicion that the variants arise from long periods of infection in individuals, where mutations that make the virus more infectious have a chance to be conserved, confirming that Long Covid -- which about 10% of people who get COVID develop -- is a potential variant generator would be disturbing.
Having careful graphs of lethality versus infectiousness that suggest some of the variants are now about as bad as smallpox is likewise disturbing. Anyone who thinks about it will recognize that it's hardly likely that the worst possible variant has already evolved.
Thing is, none of this is information to a private person. (It absolutely ought to be information to someone with responsibility for public health or pandemic planning.) Information causes change, and none of this changes what a private person should be doing. Those stay the same; get vaccinated as soon as you can, never leave your domicile without masking and staying masked the whole time, go inside nowhere you are not compelled by necessity to go, as much as you can, cover your eyes. The more readily you can do this materially, the more you should do it. The more infectious the variant, the more important it is to do these things.
Vaccination makes you safer; safe, or at least safe from this specific disease, happens when the disease is extirpated and everyone is safe together. That's going to be awhile, and post-covid normalcy -- whatever normalcy remains to the Anthropocene -- must wait on extirpation.