The trailer for the first Sword Art Online the movie Ordinal Scale was just released. But hardly any details are revealed in the trailer.
The SAO timeline went from SAO to ALfheim Online, then to Gun Gale Online, and finally a new game Ordinal Scale. This time players are awake while playing, and they can interact with the real world. Also, it seems like Asuna and Kirito will finally get back together as a team.
To find out more about the SAO movie visit the SAO movie official site at http://sao-movie.net/us/story/ordinal-scale.html.