This rumor was already debunked yesterday that Sunset Overdrive 2 isnt in development. I think Insomniac whole studio is building Spiderman and after that they will start next spiderman game as was teased/said as being multiple spiderman games. The Fallout game was actually leaked November 2017 in 4chan and the reddit leaker might he took it from there. Halo, Gears and Forza are pretty much given. Halo 6 probably get teased and they will show Forza Horizon and Gears spinoff. Other than that I dont expect much else for reminder of the generation, maybe some super lucky tale sized game.