After upgrading, the previous version's splash screen still shows up.

Clear the browser cache. 

For instruction on deleting the browser cache from Internet Explorer, please visit the following link: http://answers.microsoft.com/en-us/ie/forum/ie9-windows_vista/how-to-clear-the-cache-and-cookies-in-ie-9/3f44ced3-d81a-4745-b070-3e748cebc937

If you use a different browser, you may be able to find directions for how to do this in your browser's help menu.

The cache and cookies are still holding on to the old splash screen. They need to be cleared in order for the splash screen to update.