http://dengekionline.com/elem/000/000/984/984581/
Progress Link:
According to the teaser site, players can enjoy adventure in the world of ALfheim Online, and a new Grand Quest will be implemented in this game.
From December 19 (Fri), 2014 to the release date of SWORD ART ONLINE Progress Link, you can get SR Yuuki when you make an advance registration. (the ilustration I posted above)
プライベートピクシー・エリシュカやキリト、アスナたちと冒険することに。エリシュカは、このゲームのオリ ジナルキャラクターで、本作の物語のキーとなる存在とのこと。
Google translate:
Private Pixie-Erishuka
(?) is, the original character of this game, that of the presence that becomes the key of the story of this work.
http://dengekionline.com/elem/000/000/989/989879/
110.000 have registered. If those who register reach 150.000 they will offer this Asuna SR card as a bonus together with the Yuuki SR card:
Edit:
Sword Art Online Code Register was updated to version 1.0.7:
http://dengekionline.com/elem/000/000/990/990102/