Interestingly, Madden NFL 21 will be the first game using the Frostbite engine on Stadia, so it could be a signal other Frostbite games will come to the platform in the future. So EA has also managed to tie the Stadia release for Madden NFL 21 into this promotion by not only announcing the upcoming Stadia release for the 28th but also by announcing that all platforms, including Stadia, will offer a free weekend for the game from the 28th to the 31st, with the 31st also being the day the primary Pro Bowl even will kick off in-game as well as the actual Pro Bowl itself airing on TV.
Apparently, EA and Verizon are running some sort of Pro Bowl promotion for Madden, where actual NFL players from the Pro Bowl will play Madden 21 in order to entice fans of the sport.