Bleeding Cool mentioned that Marvel Comics was to run a tribute to co-creator of the Marvel Universe Stan Lee after he died earlier this month. Marvel have updated the Diamond listings of their covers to show what is being planned.
A black strip across the top of the cover listing his birth year and death year. And on a number of the reduced livery variant cover titles, a black back cover with the UPC code.
You can see more examples by clicking on the gallery below.