I cannot, of course, reveal proof or provided a particularly detailed leak without losing my job and all professional credibility, but here is some general info:
Armie Hammer does play Hal Jordan. He appears at the end of Justice League, but is only in it for a few moments and doesn't contribute to the film plot.
Justice League features the origins of the League. Superman does resurrect, and Green Lantern comes in at the very end, and again in a post credits scene. It also has a subplot of Lex hiring Deathstroke to steal some apokoliptan data from Steppenwolf to 'prove' that Lex was mind controlled during BvS.
The villains in order of film release are: Red Hood in Batman, who leads Black Mask to hire Deathstroke for protection (June 2018);The Rogues in Flash, but the major threat is revealed in a twist to be the unassuming Golden Glider, a very powerful pyrokenetic(Aug 2018); Black Manta and the Trench for Aquaman(Oct 2018); Black Adam for Shazam(Apr 2019); Brainiac for MoS2(Jul 2019);Birds of Prey vs Sirens in Harley Quinn's movie(Sept 2019); The Crime Syndicate in JL2(Apr 2020); Sinestro for Green Lantern Corps (??? 2020); unknown for Justice League Dark
Cyborg is out, DC's black character will be John Stewart.
Idris Elba is wanted for John, but is not signed anything.
Flash is practically ready, Geoff Johns has narrowed it down to 4 directors who he is in talks with as we speak. Flash will film in April.
Future planned films include Titans, Green Arrow, Suicide Squad 2, and Booster Gold and Blue Beetle.
The DCEU is based on a system of twos; every movie will have one sequel with the same title (BvS is an exception). There will be four JL films with the last two featuring Darkseid War and Crisis/Zero Hour stories, respectively.
Sorry I can't say more, but WB and DC Films are strict about who can know what and if I delve into greater detail than this than my identity could be discovered.
