I'd hold off until they detail what's better/different about the next gen. If they are allowing crossplay between generations, it's likely only small graphical improvements on top of the generally faster loading times on the newest generation. There may end up not being a compelling reason to upgrade your hardware for this game, you can plug along happily with your PS4 or XBONE and spend that money on DOGECOIN.
All in all, console generation aside, it's good news for DD players. Bigger pool of online opponents, and bigger pool of folks using the community market.