According to developer logs, Apple is testing several versions of the next-generation M2 chip and updated Macs that will be equipped with them. There are at least nine new Macs in development that use four different M2 chips that are successors to the current M1 chips.
Apple is working on devices with standard M2 chips, the M2 Pro, the M2 Max, and a successor to the M1 Ultra.
The release of the Mac Studio may make an M1 Max version of the Mac mini redundant, so Apple could stick with M2 and M2 Pro chips when the Mac mini eventually sees a refresh.
The internal testing is a key step in the development process and it suggests that the machines could be released in the coming months. We have heard of a new MacBook Air, an updated 13-inch MacBook Pro, a Mac Pro, and a new Mac mini, but this is the first we are hearing of a possible 14 and 16-inch MacBook Pro refresh this year.
The MacBook Air, low-end MacBook Pro, and Mac mini are all rumored to come out in 2022, and at least two of them will launch in the middle of the year.