"While all versions of IE7 are built from the same code base, there are some important differences in IE7+, most significantly the addition of Windows Vista-only features like Protected Mode, Parental Controls, and improved Network Diagnostics. These features take advantage of big changes in Windows Vista and weren’t practical to bring downlevel. The IE7+ naming gives us an easy way to refer to this version. (“The version of IE7 in Vista” doesn’t roll off the tongue as easily…)"More info at NeoWin.
Windows Vista to have Internet Explorer 7+
Posted on Monday, May 29 2006 @ 1:35 CEST by Thomas De Maesschalck