That’s good news. My guess is that the variants won’t amount to much in the grand scheme of things.
US only: cases will rise some through mid-April though hospitalization and deaths will decline, with no Mega-Surge of Doom, and then all will start decreasing greatly due to vaccination and seasonality. Booster shots will need to be taken every year with risk of re-infection increasing in those with weaker immune systems significantly after that time.
Around December, there will be a small surge due to seasonality and the anti-vaxxers. Eventually, after 3-4 years or so, there will only be small flare-ups.