During the Sword Art Online panel at Dengeki Autumn Festival 2017, it was officially announced that the Sword Art Online TV anime would be receiving a third season. The anime will be titled Sword Art Online -Alicization- and will cover the Alicization arc featured in the original light novels.
You can check out the announcement trailer below (teaser trailer provided by official US Facebook page for Sword Art Online.)
The cast announced for the anime is as follows:
- Yoshitsugu Matsuoka as Kirito/Kazuto Kirigaya
- Haruka Tomatsu as Asuna/Asuna Yuuki
- Ai Kayano as Alice
- Nobunaga Shimazaki as Eugeo
The Alicization arc for the original light novels spanned a total of 10 volumes (Volumes 9 to 18) and is the longest arc in the entire series so far. No other information has been released for the anime.