To 1. No Clue.
To 2. given that Earth-12 is similar to Batman Beyond (not saing that it IS BB) and therefore by extension the DCAU i would say its likely. Same goes for 22 which is more of a "alterntive future" parallel universe than a total different earth like Earth 9 (Tangent Comics) i would also say yes..
To 3. Not in the same form, but in principle, more likely than not. Imo.
To 4. Didn't you ask the same question in another thread?
http://en.wikipedia.org/wiki/List_of_DC_Multiverse_worlds#The_52
Here is the list. If its not on it: Nobody knows.
To 5. No idea. Reading from the The Other Wiki list i would say no, as an guess.
To 6. Ask Geoff Johnes, he's Chief Creative Officer at DC. Or somebody who can see in the future...
To 7. Same as above...
edited 2nd Mar '11 2:21:35 PM by 3of4
"You can reply to this Message!"Earth-51 is now "Jack Kirby" earth - it contains OMAC, Kamandi, and the Fourth World.
edited 2nd Mar '11 6:02:33 PM by alliterator
In context to the New 52 Multiverse? I'll try to answer to the best of my abilities:
1. No clue. Apparently the scripts are all finished, but who knows when it'll come out. Hopefully the end of 2013 or sometime in 2014, when Forever Evil won't be competing against it.
2. While the details are still fairly new, it appears that there is only one group of New Gods and thus only one Darkseid in the Multiverse. The Darkseid who attacked the Justice League on New Earth/Earth 0 was the same one who was overlord of the ones who ransacked Earth-2, and who Desaad is trying to return to.
3. Even as a Lantern fan, this is fact that is very vague. There could be arguments either way, but for now I can't only honestly say "I don't know".
4. No clue. We've only recenetly been introduced to Earth-3, let alone get a more detailed or updated map of the Multiverse.
5. Partially related to the above. But during Countdown, there were two variations of Earth-51. The first was mostly like New Earth except that Batman killed most of the supervillains after Jason Todd was killed, but got blown up by Monarch detonating. The second was also mostly the same, except a virus mutated animals & people, to set up the Kamandi setting for the Kirby-verse as it was intended to be. So no, not everyone had superpowers but they still existed for the same variations of the people who had them on the main Earth.
6. Since the reboot, I rather doubt it. For all we know, Earth-51 is the New Gods universe and was always this way.
7. Just JSA, or a major team like the Justice League? Just going by JSA... technically only Earth-2, though the heros haven't founded any team, or all met. Again, we don't have a post Flashpoint map of the Multiverse anymore.
8. Future superhero groups? As far as I know, two. The Legion of Superheroes on Earth-2 (which I'm still rather sore about, Legion Lost being part of them), and the Justice League 3000 on (what looks like) New Earth/Earth-0. Who knows if those Legion teams from Legion of 3 Worlds are even still in continuity.
Sometimes life just sucks. You have to learn to take the good with the bad. Why should you expect anything different in the mediums?

I have a few questions about the new dc 52 multiverse.
1.When is multiversity the comic series by Grant Morrison coming out?
2.Does a Darkseid counterpart exist on Earth 12 or 22?
3.Is it possible that Nekron and the White Lantern life entity exist in all 52 realities at the same time?
4.What is Earth 13 and 14 like?
5.Did everybody had superpowers on Earth 51 before it was destroyed.
6.Will Earth 51 ever be restored back to it's original state?
7.How many alternate Earths have a J.S.A team of some kind?
Place your past in a book burn the pages let them cook.