if you want to say something and can't absolutely guarantee it just add "hopefully"; in this case if you'd said "this release hopefully means chapter 1 will release soon" this way it comes across as less of a promise and more as just expressing a personal goal, and if it doesn't happen then it's less disappointing to your fans.
having played the prologue now I'm very curious where this goes, btw in my previous comment I was just poking a little fun, I wasn't really meaning anything