If you're a big fan (like me) you are going to love it,
Though it's actually meant to be watched after end of each volume of the DVD/Blu-ray,it contains no new story but more of a "More you know" kind of thing and yes it's same as the Sword Art Offline of the first season.
Reason I liked it is becasue I really enjoy the cringe-y style they got going =D
TL;DR
Sort of a news report on each SAO's volume.
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