Epic, is really a smart move from really experienced smart guys. With such initiative you even secured even more profits. There are so many devs still relectunt and heistating to use UE4, some even stopped their monthly subscriptions for personal reasons and I know some who stopped working on their projects because of that. Even those who who got subscriptions ended, and are still working on their games, they are using some old builds with their games for now and when they wnat to ship their games they have to get a last time subscription and won’t be enough for them to enjoy the latest features brought by the latest updates, well until it becomes free. Well you really facilitated the woek for all, now expect more skilled people to jump on the boat, which means more projects and more games to be released than before which can theorically increase your revenues. Really smart for you 
I really like your new launcher design and I even got Fortnite thanks !
So do we expect you to release the engine on steam just like you released UDk on it?
Will also yout Github repository acces be free for all people too, and all your Partners github repositories which use your branch tooo?
Thansk again !
Edit: it seems only the Fortnite tab and not the ability to play it 
!
Edit 2 : Marketplace for UT lol !