So, just a few things we know for those who aren't up to date on all of the info:
- Deathstroke is officially a playable character through pre-order DLC.
- Arkham Origin's younger Batman will be voiced by Roger Craig Smith, who voiced Chris Redfield in recent Resident Evil, Ezio in Assassin's Creed II/Brotherhood/Revelations, and apparently does sounds a bit like Conroy. BUT, Kevin Conroy, who voiced Batman in Arkham Asylum/City, will be playing a role in "the next Arkham game". So he could be narrating or something like that.
- Troy Baker, who voiced Batman/Two Face/Sinestro in LEGO Batman 2: DC Superheroes, Joel in The Last of Us, Robin/Two Face in Arkham City, Sinestro/Nightwing from Injustice and many more, will be voicing the Joker
- Deathstroke, Black Mask, Anarky, The Joker and Bane will appear in Arkham Origins.
- The map is suppose to be twice the size of Arkham City, having the Arkham City map with many changes, plus "New Gotham", a fancier part of Gotham with skyscrapers, etc.
More info on this Kotaku article:
http://kotaku.com/the-next-batman-game-still-has-a-lot-to-prove-508836920?utm_campaign=Socialflow_Kotaku_Twitter&utm_source=Kotaku_Twitter&utm_medium=Socialflow
I for one am looking forward to this game, and once the editions/pre-order bonuses are announced I will be pre-order to play as Deathstroke.