In a blog post today Bungie have confirmed that crossplay will be coming to Destiny 2 next year. The gaming landscape has changed dramtically over the last number of years with Crossplay and Cross Progression becoming a more prevalent. With Destiny 2 reconfirming that crossplay is coming in next year this is also another of sign of this.
Bungie have also said the following is happening
Transmog will be coming with Season 14. More details to come. (See work-in-progress screen captures, below. Not final, may change!)
DDOS protection for Destiny 2 players on all consoles will be coming in Season 13.
The Vault of Glass raid returns.
Crossplay is coming in 2021.
Two strikes (Fallen S.A.B.E.R. and Devil’s Lair) are coming to Destiny 2 in Season 13.
Legendary and Master Lost Sector rotation will be expanded to include the Lost Sectors on the Moon in Season 13, and there will be new three new pieces of Exotic armor to chase.