Hi, If i pre purchase Destiny 2: Shadowkeep on steam the base destiny 2 game is included according to the steam page, can i play the base game now if i buy it on steam or can i only purchase on blizzards launcher to play immediately? In other words, does steam link to the blizzard client if i buy the game on steam or will i have to wait till September to play the base game content if i purchase through steam. Many thanks.