I think most of the basics are summed up. Until the contracts with Sony and Fox expire, franchises like X-Men, Fantastic Four and Spider-Man are their own deals. It is unfortunate, especially when Marvel Studios has done so well controlling their IPs, which are now working to create the new Avengers Universe. Eventually I would think that Disney would work to get everything organized under a single house, but it would probably be closer to the end of the decade before that happens.
Just some random points off the top of my head...
Continuity in the Avengers Universe (Marvel Controlled)
Currently, both Iron Man and Iron Man 2 take place
just before what happens in The Incredible Hulk, although you can see in Iron Man 2 that some small bits of Hulk show up at the end of the movie. This of course plays nicely into the after-credits sequence at the end of Hulk when Stark, as a "frontman" for S.H.I.E.L.D goes into the bar to convince the General that Hulk should be on the team. My understanding is that Thor is going to take place right near the end of Hulk, or shortly thereafter, although I'm not sure how the story will fit into the continuity that we know of.
There is a bit of confusion as to whether or not there will be an Iron Man 3, and whether or not it will take place before or after the events of Captain America. Of course, we know that much of that film will be an origin story piece with a major portion of it taking place during WWII (which will ROCK I might add - Can't wait to see stuff at SDCC'10), so I can't imagine too much happening in the present aside from Cap being unfrozen and being taken in under Fury's wing. Where Iron Man 3 would go is really up in the air at this point, although I know Favreau has talked about doing The Mandrin as the villain, and I could easily imagine it having something to do with China developing an Iron Man MKIV rival.
Eventually everything comes together with The Mighty Avengers, and with Hawkeye being added to the mix already, I'd say things are coming along smoothly. Word is that the story will have to do with S.H.I.E.L.D and The Avengers fighting off a Skrull invasion, which seems a bit forward-thinking (given Secret Invasion just happening), but I'm not sure what else they would really want to do at this point. I'm under the assumption that Avengers will probably have at least one sequel, but will more than likely serve as a jump-off point for a pretty hardcore S.H.I.E.L.D film (anything with Sam Jackson is worth it), and presumably a Hawkeye/Black Widow project as well. There has been talk of a Hank Pym and Wasp film for a while, with names like David Duchovny and Eva Longoria being thrown around, but I have no idea where that project has ended up.
...Whew...
So, TL;DR: The Mighty Avengers will probably follow a story arc more like what we saw in Ultimates.
Chances are that we'll know a lot more come time for Comic Con this summer. I'm going to be doing my damndest to at least sit in on the Thor panel, which I assume will be filled with a lot of talk about continuity plans and so on. Simply put, Marvel knows where it wants to go, and with Disney now footing the bill for everything after Thor, things are going to get crazy.
Deadpool - Whaddup Wit Dat?
(Read that in a yellow text bubble, please)
Ryan Renolds is still on for a Deadpool film... After Green Lantern is finished. Generally speaking, he is pretty enthusiastic for the character and what he is supposed to be doing. My understanding is that, with this project, its going to be entirely separate from what we saw in X-Men Origins. That means he will not look like a melted GI:Joe with razorblades in his arms, he will don the black/red ninja outfit, the fourth wall will be broken consistently, and there will be plenty of outrageous pop-culture references to boot. When you get a pretty popular actor behind a character, chances are that things will get done properly. IMO, with Deadpool, its more about the witty writing than anything else.
Known Reboots (As of Now)
- Spider-Man by Sony, going for a "younger" Ultimate-style storyline in Parker's High School days
- X-Men: First Class by Fox, going waaay back to the early days with the first studens of Xavier and so on. When I say "waaaay back" I mean, like, Xavier and Magneto in their 30's. Which, now that I think about it, doesn't make as much sense as I thought...
- Fantastic Four by Fox, presumably with an entirely new cast, a new story as well. Not sure how they will manage this given the madness that was the first two films. I just wanna see Doctor Doom blow stuff up.
- Ghostrider, presumably by Marvel-Disney. No idea how this will work out.
- Daredevil, presumably by Marvel-Disney as well. Again, no idea how this will work out
- The Punisher. Its been talked about, but after the trainwreck that was the last film (odd how this works over, and over, eh?), I'm not sure how it will happen. Especially in a Disney-controlled future.
Personally, I don't really know of any other Marvel IPs that are going toward movie town just yet. The only other big, primary characters left to do are Doctor Strange and Prince Namor, and those would likely come long after The Mighty Avengers goes down. I've seen rumors about a Luke Cage project, same with Spider-Woman, but I'm personally doubting whether or not those would ever happen.
Marvel-Disney vs Warner-DC
My guess is that DC is waiting patiently to see how things work out with the overwhelming majority of these new Marvel films before they get neck-deep in universe building as the others have. Part of the problem right now is that while Nolan has created a masterpiece with Batman, and will like do a repeat with he and his brothers work on Superman, it sets an awfully high, perhaps too realistic precedent for the rest of the DC films. It will be interesting to see how both Superman and Green Lantern work out, especially when knowing that Batman 3 is on the way for 2012. Furthermore, however they're going to get Wonder Woman and Flash to work out as well.
Marvel has done a really good job of placing their IPs in the hands of good directors, many of whom are fans of the material that they are working with in the first place. Furthermore, they've made their IPs modern, relevant, and attractive - even to people who know nothing about the comics. I feel like DC will have to work pretty hard to replicate that, despite dominating my childhood with their various animated series on television. But, that may be where DC's strength ultimately comes from. With a more focused look at a smaller group of characters and franchises, they may walk away with a more polished product overall. DC's catalog doesn't have nearly as many flagship titles as Marvel, but certainly has a lot more of the artistic, story-driven pieces that will translate better to film than most of the Marvel work.