I thought it'd be 1.0 cause of "once in a life time" which had 1.0 as the version and it was last update so I thought perhaps that's what cari would be doing for eternum, Ending it in the next update and version would be 1.0 but like you said he plans for 12 to 13 chapters which I had no Idea about btw, it'll probably what you said
Anyways it doesn't matter cause that means more story and I'm all for it