✨ Pre-Order Age of Empires III: Definitive Edition NOW; Play it on October 15!

Good afternoon,i have preordered the game but i have a question about Steam.So there is now a bundle with complete collection and DE,but i just want to know if Microsoft can comment about that now.Will AOE3 complete collection be removed from Steam Store when DE releases october 15 or will the game still be available for purchase after,as it had been the case with AOE2 hd?
Thanks for any replies about this.