Battlefield 4 beta is going to be available to everyone that pre-orders Medal of Honor Warfighter
There will be other ways to gain access to the beta, however they have not released the other ways.
The beta will be available in fall 2013 but we have heard a load of rumors that it will be in December, This could mean DICE are planning on releasing a Battlefield game every year just like Call of Duty and other games like it. DICE has released a game every two years since the first Battlefield game and we don’t think they will stop with this one. It will be just like the first Medal of Honor and Battlefield 3.