Studio 3Hz and the official X/Twitter account for the Sword Art Online Alternative: Gun Gale Online II anime confirmed the same staff who have been working on the anime will continue to work on the anime at A-1 Pictures.
The studio has produced such anime as Princess Principal, Flip Flappers, Sword Art Online Alternative: Gun Gale Online, BLACKFOX, Chidori RSC, Dimension W, The Devil Is a Part-Timer!!
Sources: Studio 3Hz’s X/Twitter account and website, Sword Art Online Alternative: Gun Gale Online II anime’s X/Twitter account via Yaraon!
Sword Art Online Alternative: Gun Gale Online will premiere in October.