IE10 will not be released for Windows Vista released in 2007 as well as the operating system that is about to be released next year is Windows XP. Last year, the company also gave up the release of IE9 browser version for Windows XP operating system but still supports Windows Vista.
IE10 is a browser that comes with Windows 8, including Windows RT for tablet based ARM chips. IE10 Release Preview for Windows 7 is currently available here.