The plan was to buy M1X at the end of 2020 or at the beginning of 2021 and to buy the M2X at the beginning of 2022.Too be honest, this could be classed as 2nd generation. It’s a took a year longer than the M1 to be released, that’s normally a complete cycle in Apple world. Additionally, I’d expect Apple would have made architectural improvements to it.
Somehow it is a bad feeling to buy something (old) and at the end of this year you will have it at home, but theoretically you could but the next generation at the beginning of the next year.
It remembers me about Intel, developed new things but started to sell it much much later, because they were the number 1 and it was terrible for the customers to wait every time very very long to buy something new with only 1-3% speed improvement.
Apple should sell (M1 and M1X), (M2 and M2X), (M3 and M3X) at the same time.
If not then there is the problem when the program is running on only one core, then the much cheaper M2 will be faster than the M1X.