Board Thread:Questions and Answers Forum/@comment-217.23.229.99-20150625103815/@comment-170.40.160.232-20150625173354

With the initial release, you could buy the digital copy on Xbox 360 before 1/15/2015 and it gave you a license on the One as well. When I got a One a couple months ago, it automatically copied my char details over, so it worked as promised.

Along those lines - that mean yes, except that if they will ever make it possible for 360 and One players to group up, I'm going to say no. If a they do include the backward compatability for Destiny then by default you would begin playing on the One via the chars you previously created.