Within a year after IE7's release (end of 2006 to end of 2007) support calls to Microsoft had decreased 10-20% [REF].
On January 31, 2006, Microsoft released a public preview build (Beta 2 preview: Pre-Beta 2 version) of Internet Explorer 7 for Windows XP Service Pack 2 (not for Windows Server 2003 SP1) on their web site.