If you are a Destiny 2 owner on Battle.net you should definitely enable your profile to switch to Steam with the release of the Shadows from the Deep expansion on October 1st, 2019.
Whether you have the only standard version of the game (given to all users a few months ago) or the Renegades with their Annual Pass, you can make the licenses present on your Battle.net account pass to Steam simultaneously with the release of Destiny New Light and Shadows from the Deep next week. Anyone who forgets to make this transition will be forced to buy back their contents and will no longer have the opportunity to proceed with the transfer.
If you decide to do it today, simply visit the page of the official transfer site and connect your Steam account to the Bungie.net account. If everything is successful, a green bar will appear at the top with the message confirming the registration. This means that next Tuesday afternoon Destiny 2 will automatically be added to your Steam library and you can continue to play it as if nothing happened. At the moment it is not yet clear if the passage will need to re-download the entire game or you can keep all the files currently on our PCs.
Before saying goodbye, we also invite you to take a look at the first images showing all the pre-order bonuses and the Deluxe Edition of the game. Among these we find an ornament for the exotic two-tailed Volpe rocket launcher and an Eris Morn themed set containing emote, emblem and wrapper for the Specter.