I'll be honest, hearing Dark Sun is coming in 2010 makes me very happy. When 4E came out, Dark Sun was the one setting I was really hoping they would bring back. It fits with the feel 4E has going for it so well. My only complaint? Waiting until 2010 to get it, and even then, it won't be till the middle of the year.
Our goal with the setting was to cleave as close to the original boxed set as possible while still allowing as many D&D options as we could and making the setting ideal for 4th Edition play.
This is nice to hear as well. The original setting before any story elements were developed is the preferred setting of many. It's good to know that they aren't fast forwarding anything and working to keep it how everyone loved it.
Created by popular demand, this requested setting was saved specifically for now in 4th Edition, and will also feature new novels set in the world of Athas.
That is also very true. Fans have been proclaiming loudly for a while now that 2010 was the year of Dark Sun, and I'm glad WotC listened.