Most of Vistas new features wont make it to windows XP. I dont know if you have used the newest vista beta yet but dam is it different. DX10 in XP isnt comfirmed yet so quit fighting weather it will be or not. But my guess is no just because of how DX10 is suposed to work.(shutting down all but the most crital services runing when a game is ran)heatlesssun said:DX10 will NOT require Vista first off. Many of the features that will be shipped in Vista will be available to XP, as Microsoft realized that businesses aren't going to upgrade to Vista for a while, if ever. Most on going to be on XP for quite a while. Vista and XP are going to coexist for a long time, meaning that both will get 1st level support.
As for XP, though its had is share of security issues, overall it's worked very well. I've espcially liked the Tablet and Media Center versions. They offer something unique and the latest verions have really been neat. Windows Media Center IMHO is the best HTPC system around, with one glaring hole, the lack of real HDTV support. But that's more of a problem with hardware than software.
As for Vista, it's got a lot more going on than the interface. It really will be the first version of Windows that has a good secuity model. Current Windows versions don't do what UNIX has done from the begining, that is work from a default deny philosophy. Most Windows users log in as administrators (because for the most part you have to). With Vista, like UNIX, you'd almost never do that. If you need higher privledges, you'd only do so when prompted, what Microsoft calls User Account Protection. That and IE will by default run as a VERY limited user. It won't be able to do the crap it does today by default.
These changes will solve 90% of the security issues in Windows, at least problems like the WMF hole. Visiting a web site won't take over your computer anymore, If a hole does arise, apps won't by default be running under high privleged accounts like administrator that can infect your PC.