Next Batman game on 60 years from now?

Since Backyard is all turning back to Gotham, thought about to share something a little birdy leaked on internet. But as soon as it got out the guy who posted it was 'kind' enough to delete it, to protect his job. :D
Anyway when I say 60 from now, it doesn't mean in our time line, I was talking about in Batman's time line. I wanted to make that clear, well *ahem* since lot of net viewers IQ is less than an average donkey.

Anyway we all know, (by now) it was a prank that Rocksteady did on VGA 2011 with Mark Hammil (Joker) win for Best male Character thingy. Even Joker says Spoiler. It hard to believe that there gonna be a game about "Arkham World",. Since is Arkham is only a minor part of much larger Gotham itself. Mark will not return as Joker anymore, So it will be pointless to bring back the dead joker.

However, we also see alight in this darkness in Steel Mill. Near Harley Quinine's old out fit, you will see a pregnancy test report. Which turns positive, so we all know that Harley is pregnant.

Well the confirmation that came out which I mentioned earlier was came from a story board Artist that actually works in Rocksteady. According to him, rocksteady is developing art works for future Gotham. And we all know batman will be replaced by "Batman Beyond" Bat. Alfred will be replaced by old Bruce Wayne, and Son of Joker will take on the new Gotham. However this is not confirmed yet, Rocksteady is only making storyboards and concept art for a future Gotham. Since all previous Batman games left with a hangover (Killer Croc easter egg in Arkham city, What happens to Poison Ivy, Does Riddler get tired of what Batman did to him for his mind games, Whose the higher friends Dr,Strange taking about?, What happens to Hush etc.) it is meant to be a sequel to this game. Also don't forget scarecrow will return due to 3 coded messages which can be found in Arkham city and Ras al Ghul probably never died ( later his body dissapeared and his sword was on the ground). If your are not sure about that, after finish game, go on check it.

"we are two of a kind
violent, unsound of mind
you're the yin to my yang, can't you see
and if I were to leave
you would grumble and grieve
face it Bats, you'd be lost without me"
                                                     -Joker

Anyway, it's best to see and watch.