The opening theme will be performed by Eir Aoi (Sword Art Online – Second Opening theme, Uchuu Senkan Yamato 2199 – First Opening theme, Kill la Kill – First Opening theme, Fate/Zero – Ending theme) and titled ‘IGNITE’. Additionally, new footage for the second season of Sword Art Online II is shown in the opening preview.
The second season will once again be produced by A-1 Pictures and will feature the same cast as the first season. It will also be streamed on various licensed sites worldwide. The series will begin airing on July 5, with a Japanese advance screening of the first episode on June 29th.
Synopsis from Haruhichan.
1 year after the SAO incident, Kirito is approached by Seijiro Kikuoka from Japan’s Ministry of Internal Affairs and Communications Department “VR Division” with a rather peculiar request.That was an investigation on the “Death Gun” incident that occurred in the gun and steel filled VRMMO called Gun Gale Online (GGO). “Players who are shot by a mysterious avatar with a jet black gun lose their lives even in the real world…” Failing to turn down Kikuoka’s bizarre request, Kirito logs in to GGO even though he is not completely convinced that the virtual world could physically affect the real world.Kirito wanders in an unfamiliar world in order to gain any clues about the “Death Gun.” Then, a female sniper named Sinon who owns a gigantic “Hecate II” rifle extends Kirito a helping hand. With Sinon’s help, Kirito decides to enter the “Bullet of Bullets,” a large tournament to choose the most powerful gunner within the realm of GGO, in hopes to become the target of the “Death Gun” and make direct contact with the mysterious avatar.
Source: Otaku Tale