Maybe I'm being totally obvious here, but since I didn't catch on the first time neither the second time I looked at the cover... Apple trough Zebra, duh?
Edited: From the press release - " For artwork, wanting to again get the best possible contributor, they turned to the famed Hugh Syme (Rush, Fates Warning), who delivered the vivid image of a zebra eating an apple, encom-passing the band name in a sly way. " Never mind
Anyway, I like the cover, it really draws attention.