A caption says: "EC will be released on 23rd September. Wish us luck in the fight against Battlefield 1"
Nathan on Steam: "We will keep on fixing the broken systems while others finalize implementation of new systems, such as the improved Advancement trees and release a patch next week. The meta-game team is also working on it's redesigned implementation which I find pretty cool but it's not slated for the next patch." Next week.
you can loose a battle and still win the war (be aware it's not a an opinion I have about the outcome of EC vs BF1 but just a fact! Do they even aim for the same market? E.g. I don't care about BF1 but want to have a good 40k game)
There will definitely be overlap for the same player base. They are aiming for team oriented gamers who want strong teamwork and the ability to fight a tactical battle.
All previous game patches stitched together into one big patch "quilt" that says "We're updating the game next week. See you then!"