Are you familiar with Paradox Interactive? They do weekly development diaries for all their games, HoI4, CK2, EUIV and others I can't remember and this always makes the community keep interacting and get hyped over the developments of the next patch or DLC.

I'm not saying you have to write a super long essay, sometimes they do long diaries, sometimes its just a picture with a few commentaries of what they have been working on recently, it's always fun to have the new info once a week and the devs usually hang out on the diary for at least 1 or 2 hours answering questions and just having fun with the community, I've always enjoyed that.

Here are some examples of their development diaries so that you can get an idea of how they go, they don't even have to be weekly dev diaries, it could be twice a month even.

Hearts of Iron IV
Crusader Kings II
Europa Universalis IV