Microsoft's Recommended Checklist to Prepare For IE7

Here is Microsoft’s recommended checklist for changes that may impact Web sites after the release of IE7.

http://www.microsoft.com/windows/ie/ie7/devwebchecklist.mspx

There’s an interesting blurb about the upcoming ActiveX Opt-In:

“ActiveX Opt-In automatically disables entire classes of controls — all controls the user has not previously enabled — which greatly reduces the attack surface. This new feature mitigates the potential misuse of preinstalled controls. Users will now be prompted by the Information Bar before a previously installed but as-yet unused ActiveX Control can be accessed.”

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Hmmm...a little further reading makes me think the new “ActiveX Opt-In” might not actually be an issue:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/IETechCol/cols/dnexpie/activex_security.asp

Some ActiveX controls will not be disabled by ActiveX Opt-In.

1. 
   Controls that are commonly used and that were designed with security scrutiny will not be disabled. These controls will appear on a pre-approved list.
2. Controls which were used in IE before upgrading to IE7.
3. Controls which the user downloads through IE7 will be automatically enabled during the download and install process.