MSN 8.5 just automatically updated to build 8.50.0016.0801, with some minor visible changes such as a MSN butterfly on the dashboard on startup as opposed to the MSN logo, address bar animation, along with other visual changes. Also added is a "Check Names" button to the Write Message screen when composing a new e-mail message, which will check the e-mail addresses listed in the To or CC fields for mis-spellings (applies to only those e-mail addresses you have in your address book). Click on Read More... to for a screenshot and a download link.
You can download this build by clicking here. People with the first release of MSN 8.5 do not have to manually download this, MSN 8.5 will automatically update. Screenshot Source: ieXbeta