Alan over at OCModShop offers up a brief history of Internet Explorer, from its release in 1995, all the way to IE7 Beta. Interesting read if you never knew much about the browser, & are curious.

"The last major upgrade to Internet Explorer, 6.0 SV1, is included in Windows XP Service Pack 2 and Windows Server 2003 Service Pack 1 only. Version 7 of Internet Explorer is currently under development; Beta versions have been released on a regular basis, most recently build 5346.5 released April 24, 2006"