Gamestop Italy (Lega Network) has leaked the first poster for Bungie’s Destiny 2. Multiple sources say the poster is real and that an announcement is forthcoming.
Kotaku confirms that the Destiny 2 poster is legitimate and it will be out on September 2nd, 2017. This could be the European release date since North American titles usually come out on a Tuesday. That or it could be a worldwide release date.
Furthermore, Eurogamer has heard that a beta will kick off in June with the PS4 getting first access to it. Bungie itself has yet to announce details, but it sounds like all the info is leaking before they have had a chance to say anything.
It will be a true sequel to Destiny. As Bungie revealed a few weeks ago, your character progression will not carry over onto the sequel so you will have to start from scratch.