According to Morhaime, “We’re in the process of selecting a new direction for the project and re-envisioning what we want the game to be […] While we can’t talk about the details yet, it is unlikely to be a subscription-based MMORPG.” He then went on to reiterate that there has not been any official release date or a projected release date yet, despite the rumors which suggested 2016. In any case if Blizzard is not taking the subscription route, we’re assuming free-to-play could be one of the models that the developer is considering.
Many MMOs have taken the F2P route and given Blizzard’s popularity and massive fan base, we expect that whichever direction the company takes they will definitely have customers.