A notification banner, first noticed by MacRumors, which bares a striking resemblance to iOS notifications introduced with iOS 5, appears to only be a placeholder. It is vaguely titled "Default Title for English" with a message of "English - This is a test message description."
The message appears when you log in to your icloud.com account directly from the Web site.
Apple's preview of Mac OS X Mountain Lion shows off a similar banner notification system, which may be related to the iCloud notifications. Certainly syncing notifications across all iOS devices and your Macs … Read more