Over the years, the PlayStation-exclusive Destiny content has been slowly accruing, with Xbox owners left out of the festivities. Now, all the content has appeared on the Xbox One, after Destiny 2's release.
The content includes all the PlayStation-exclusive Strikes, PvP maps, and gear and other things from The Rise of Iron expansion. Sony locked the content up for an unknown amount of time, but very few people suspected it would take this long.
Destiny 1 was released on September 9, 2014. Destiny 2 was released on September 6, 2017 on Xbox One and PlayStation 4, with the PC release coming on October 24.