Engadget has scored a couple of sneaky first looks at both Apple's upcoming "Let's Rock" event (above) scheduled for Tuesday, and the new 4th Generation iPod Nano (below) that's all but certain to be released there.

Once Kremlin-eque in their secrecy and security, Apple's iPod division has either grown leakier as of last year's 3G "fatty" Nano, or Apple itself is doing a little guerilla marketing to soften the news up and build anticipation.

Which one is it?