Hmm, whats going to happen the all the Marvel Comics things at Universal Studios Florida themepark. I am sure Disney wouldnt want to be sending tourists to their competition.
Yeah, I thought about that to. Perhaps Marvel's contract with Universal Studios is pretty near to ending.
I believe that Universal Studios
Orlando (specifically) has two arrangements with Marvel. What I know, pretty-much for sure, is that they have a perpetual contract covering Spiderman and The Incredible Hulk. Essentially, they can use the characters from those two assets in perpetuity, as long as the corresponding attractions are open. In return Marvel gets a cut of the gate. (Answering the last bit in Scott's message... this means that Universal would be paying Disney, so Disney wouldn't mind so much having their guests go to Universal once they're getting a cut of the admission paid there.

) The second arrangement I'm not quite as confident about, but it covers the general use of Marvel characters in their Marvel Comics attraction area. I believe, but am not sure, that that is a term agreement, and that it is not close to expiring. If that is the case, nothing about this acquisition (can or) will change the terms of that agreement, except perhaps making it a bit less likely that it will be renewed.
However, even saying that, it is not assured that that arrangement will not be renewed. Disney could see a benefit to, essentially, promoting "their" characters at another popular vacation destination, and earning money from tourists visiting Universal Studios. I suspect that such renewal will depend on the extent to which Disney plans to make use of those characters through new attractions in their own parks. Also note that this deal might acutally prompt Universal to terminate their use of (what would be, at that point, their competitor) Disney's characters, for the obvious reasons: They wouldn't want to promote Disney characters, or send money to Disney.
Yet another odd consideration: Marvel utilizes different studios for it's live-action movies. I wonder if EVERYTHING is going to be shifted to Touchstone and Pixar (how cool would that be to see a CGI styled "Avengers" flick, ala "Toy Story")?
There is no question that this deal offers a lot to Marvel, in the form of a strong, stable, consistent distribution channel, not only for their feature films, but also for merchandising. I wonder, also, if there are synergies that can be realized from bringing the comics in-house, associated in some way with Hyperion Books. (How convenient is it that Disney's publishing assets are under the Hyperion label, and Hyperion is the name of some Marvel Comics characters.)