Not yet. Only available to onsite guest.
In order for you to use FP+ you will have to make your reservations in the park.
There is no charge to use FASTPASS or FastPass+ both come free with park admission. The older FASTPASS system is available to all park guests. As of January 2014, FastPass+ is available to the following groups:
"Anyone staying at a Disney-owned resort
"Anyone staying at the Walt Disney World Swan or Dolphin hotels (same-day, in-park reservations only at present)
"Anyone (including families staying outside of Walt Disney World) at Disney's Animal Kingdom and Magic Kingdom theme parks (same-day, in-park reservations only at present)