User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-2607:FB90:4895:A053:C532:AF5C:76B8:76C5-20190623083349/@comment-1359322-20190623084355

Since V11 & V12 are technicially a double volume story, they wouldn't split it into 2 seasons, besides i don't think V11 can take up to 12 episodes anyway. >_>

As to whether or not it's a new season. Lets just wait patiently for now.