I’m not Jim, but can assist: First the new Touch Probe will come with the necessary documataion to tell you how to connect the probe to all versions of the GRBL board. But as the owner of a Ver2.2 board AND a Touch Probe, here is how (I believe) you will connect it.
You will connect to the two (2) pin connector marked PROBE (part of the long white connector) and circled in red. Nixt, you will also connect the provided pigtail to a 5V source. I have identified four 5 Volt pins on the 2.2 board (Red Dots).
I ALSO have a probe that is part of the Additive Aerospace kit, and I use it to locate the center of holes (when I want the center of a hole to be my X0Y0, so NO it does not become redundant, it just becomes another tool in out toolbox.
I hope I have answered all your questions.