Closest thing I can find to what you are looking for is on 2010. It has a "Display Desktop Alert with Enable a Preview for Rights Protected Material." Basically it pops up a little notification window in the bottom right of the screen and plays an audio tune when a new message arrives.
There is prolly a way to make a script handle that and pop up the email full size, but inherently in Outlook, not so much.
"You don't know what you got, till its gone..
80's hair band Cinderella or ode to data backups???