Keep getting 404's for apple-touch-icon.png
Will usage of these meta tags cause an iPhone to search for an apple-touch-icon by default? We are not providing an icon, but should we be? We would really just like to remove this 404.
Yes. Wenn you add
<meta name="apple-mobile-web-app-capable" content="yes"><meta name="apple-mobile-web-app-status-bar-style" content="black">
to your site it means that the user can create a bookmark on his home screen which is not opened in Safari but in a webview which looks like a "native" app. You should provide these images as kind of app icon for the home screen.
This might be the hint you were looking for: http://developer.apple.com/library/ios/#documentation/AppleApplications/Reference/SafariWebContent/ConfiguringWebApplications/ConfiguringWebApplications.html