I have the same question, i just hit the anniversary date and only found a "VAA Credit Card Companion Flight Qualification" on the account (which I understand allows a companion when buying a cash ticket). actually i was waiting to receive "2 Premium Economy reward upgrades" having spent more than 10k on the Amex card during the period. maybe that will take more time to hit the account?
Also, the upgrades are intended per booking, so in fact, it is a 2 return upgrades in Prem, used for me and a companion or for me two return flights, correct?