http://gematsu.com/2015/01/sword-art-online-lost-song-20-30-hours-long-producer-wants-ps4-version
Single player of SAO: Lost Song is 20-30 hours long, plus some other stuff.
http://gematsu.com/2015/01/february-4-persona-news-livestream-schedule-announced
Persona stream inc. P4D release date coming?