As seen on another website:

The full rollout of MyMagic+ for Annual Passholders, including both FastPass+ and MagicBands, is planned to take place within the next couple of weeks.

Some passholders have already been included during random testing, but this next phase will bring all passholders onboard by mid-march 2014.

Annual Passholders should soon see the option to customize and order MagicBands in their 'My Disney Experience' account on the website or mobile app. Delivery of the MagicBands is expected to take place in late March 2014.

As expected, Annual Passholders will have the ability to make FastPass+ reservations in advance of their arrival in the park, in a similar way to resort guests staying at a Walt Disney World hotel.