EA has provided invitations to the reveal of Battlefield 4 at the 2013 Game Developers Conference, which will take place in San Francisco from March 25th through 29th. The event will begin immediately after this year’s PAX East, where Blizzard and Capcom have also teased new announcements.The invitation shows a similar color and font palette, indicating that Battlefield 4 may be a direct sequel to Battlefield 3.For now, no details have been confirmed, but look out for more info at the end of this month once the event has taken place.