Quoted from explosiveegg:It's supposed to be a fairly small run of MMr this year, so if you want one, reach out to your favorite CGC distributor ASAP.
The next run of MMr is NOT this year. It was announced to be "early 2023", and that was when they were still saying that CCr would be released in 2021.
Odds are it will be mid-to-late 2023 when MMr is actually available again. I hope it will be sooner than that (as I am on a wait list already), but I doubt it.