I'm also a MC PP and no e-mail notice received so far. I did get a notice awhile back that I will be getting the free coin sometime in November. :)
Masters Club Free Coin Good news - Because you earned Platinum Plus or Platinum Prestige status at the end of the last program year that ended on December 31, 2019, you will receive the free Masters Club coin in November 2020! Stay tuned for more details.