WALK HUH?

Some people were wondering about the 2 versions of Walk On that they saw on the images of the promo sleeve. These are the details:
U2 Walk On – US Interscope 2-track promo CD single featuring Radio Edit 4:23 & Album Version 4:55, custom picture sleeve INTR-10261-2. You can buy a copy of the promo from EIL.com.