Even though we are yet to find out the release date for Dying Light 2, we do know that the developers are planning plenty of content updates. Namely, Techland already has plans for four years of DLC! Now, that's a true long-term strategy.
The lead designer, Tymon Smektala gave an interview for Prankster101 and here's what he had to say on the matter: "Dying Light was supported for four years after its release, and the plan for Dying Light 2 is exactly the same". He also believes that you'll need to spend around 100 hours to see all the ins and outs of the sequel. Blimey, that's quite a lot! But, in any case, I love it when we have games that engage us like that, so huge thumbs up from me. We'll see if something changes in the meantime, but anyway, what he said does sound promising.
We will keep you updated as soon as we find out more about the actual release date. Dying Light 2 will be released on Xbox One, PS4, and PC at some point in 2020.