Is Creality Ender 3 V2 Supposed To Come With Board V 4.2.2?
Yes, they are shipping the v2 with the 4.2.2 board.  My understanding is that the 4.2.7 board has a change in the stepper driver pinout but is otherwise the same as 4.2.2.  The change in the pinout allowed them to change the stepper driver package as the stepper driver vendor appears to be changing that spec.  I've used both boards in my V2 with no discernable difference.