No, next update is the start of the ending chapter, it will only go over the resolution of the cliffhanger at the end of chapter 5.
It will have a lot of "game overs", the scene will also lead to one potential "bad ending" (which will not appear on the coming one, but once I start the literal endings), otherwise, the update will be mostly about the last ordeal for Myriam, sort of a test to see if all her changes and evolution during the game made her ready to face it and able to get on with her life during the coming endings (which will come if not in the next update, the next-next one).
Once that scene done, next update (not the coming one I mean) will be about setting up the game for the multiple endings, using an ellipse to settle the aftermath of the coming update and put Myriam at some specific points which will lead to all the different possible endings depending on the player choices (giving the players the ability to see a few of them without starting over too much, though it won't be possible to see them all in one go for sure (unless you cheat of course ^^ )).
After that's done, it will be all about the endings (without forgetting the paused one, like Anthony's bad one in chapter 2 and the bad one unlockable in the coming update), which I'll try to alternate as best I can. And if things are running well at this point, this is when I'll try to start working on the next game in parallel, so that I can offer something as an intro once I finish Project Myriam, without having months of nothing to offer (but more on that in the future for more details).
Here you go, that's the plan without going into too much spoilers... After that, we'll see how it goes. ^^