Recently IE team announced the official name of IE for Windows Vista, "Internet Explorer 7+". 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 and most of these features take advantage of big changes in Windows Vista. What I feel is the naming part will just cause big confusions among the IE users.