I may get Eberron, but what I really want is a setting that has been designed from the groundfloor up with 4E in mind. Something that can showcase its strengths. I'm not so much interested in a setting that needs to be "re-imagined" (or shoe-horned) in order for it to fit into 4E's paradigm.
After seeing the heavy-handed way WotC altered FR to fit 4E, I'm worried about what they'll end up doing to these other classic settings.
I think the major problem with the FR is that they didn't "re-imagine" it, but rather they DID shoe-horn it. These are different things. If they'd started with a largely clean slate and simply focused on the FR's strengths, they'd have been good.
Instead they took the existing FR, and said "How can we change this to make it fit with all the 4E elements". Not how can we "re-imagine" this - change this. It's different. So we have countries vanishing off the map or falling into chasms, Dragonborn appearing out of nowhere, and so on. And effectively it's Time of Troubles 2: Electric Boogaloo. Which precisely three people in the world actually wanted.
If they'd said "Here's the FR, but different", I think a lot less people would have been upset.
With DS and PS and so on, if they re-imagine/genuinely re-boot them, they'll be fine, because they can just take what's cool about the setting and expand on it. If they instead take the existing setting and just try to change it so now it fits with 4E, then I think that's going to create a lot of problems. I mean, DS doesn't need Dragonborn or Tieflings, and Clerics and Paladins are questionable. Part of DS' strength is in that it doesn't have these elements. So hopefully they keep them out. What would be really bad is if they do to DS what they did to the FR, i.e. advance the storyline and jam every single thing from 4E into the setting, regardless of whether it fits.
The main reason to worry, I guess, is that the guy in charge of this is the guy who screwed the pooch on Dark Sun's "Revised" version. Still, maybe he was forced to put in all the silly stuff by other people and bad novelists. We can only hope.