Mike's Bikes in Northern California recently posted some 2021 model year M10 and M20 bikes with an expected shipping date of January 22. I was fortunate to jump on a M10 which was actually in stock a few days ago. I asked what's up and they said a container of Rise bikes recently arrived. This is far sooner than the April/May shipping estimate for the 2022 models. I have been unable to spot any significant differences between the 2021 and 2022 models. They are offered at the same price.