I am unsure if all these games will be released as some have been on this "Most anticipated war games 0f 201X for several years now"? I dare say "Steel Division 2" will definitely be released. I'm waiting for any news on the spiritual successor of "Steel Panthers" name subject to change but currently known as Steel Tigers? Nothing in 2 & half years since its announcement games seem to be taking longer and longer to finish these days.
As an honourable mention " The Combat Mission Team" should also release expansions for Italian and Russian base games this year with hopefully a couple of campaign/battle packs also.
Am anxious to see what Wargame Design Studio will be up to in 2019 ! What Tiller games will they re-imagine next ? Will there be a new Panzer Battles title on the horizon ? (probably not as we just got North Africa 1941)