Quoted from KozMckPinball:
For some reason, CGC seems very intent on producing TOMr. CGC not being sure how well it would sell is probably why it might not be #4 but it was a priority for them, that was easy to gleam from Planetary Pinball's past comments.
I know of at least two people in my inter circle of friends that won’t buy a used TOM because they are waiting on TOMr. I’m sure there are many others out there also.