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If you're part of the dwindling group still using Windows Vista, you'll have to wait until your next upgrade to take IE10 for a spin -- Microsoft has confirmed that the latest version of its browser won't run on its last-gen operating system, either in developer preview form or when the final software ships. While it's tempting to interpret that as an attempt on Microsoft's part to put the widely loathed Vista in its past, there's actually a precedent for this -- remember that Microsoft cut off XP support when it unveiled IE9. As a Microsoft rep told  Computerworld , the company would rather not have to develop software for a lowest-common denominator. At least, if you do have to stick with the newly minted IE9, you can be sure you'll be in good company. Computerworld

Happy with your shiny new copy of Internet Explorer 9? It's  already  out of date -- Microsoft just announced Internet Explorer 10 at its MIX developer conference in Las Vegas, and if you're running Windows you can grab a spoon right now and sample an early taste. You can download the new Platform Preview right now at Microsoft's Test Drive site and see where the company's going with this early iteration, which adds support for additional web standards like CSS Gradients and CSS3 Flexible Box Layout. According to the press release, a gentleman named Dean Hachamovitch just revealed the new browser on the MIX stage, but we're actually watching him speak  right now , and... he's not quite there yet. We'll let you know what he says. Update:  Video after the break! Update 2:  Dean and Steven Sinofsky (president of the Windows division) are indeed showing it off on stage, but they're just performing the same Test Drive tests you could run at home -- go on