At E3 this year Bandai Namco released new trailers for Sword Art Online Re: Hollow Fragment and Sword Art Online: Lost Song.
Sword Art Online Re: Hollow Fragment is due for PlayStation 4 this summer via digital download only. It will be an updated version of the original PlayStation Vita game with better visuals and a new (hopefully vastly improved) English translation.
Sword Art Online: Lost Song is coming to PlayStation 4 and PS Vita with both digital and physical flavours this autumn.
See below for trailers including a 3 and a half minute gameplay trailer from Re: Hollow Fragment which in my opinion looks fantastic!
Re: Hollow Fragment Gameplay