ACTUALLY, there are countless pre-release screens where characters are using attacks that would clearly hit in the full version. I'm not 100% certain, but my guess is that the devs have/had a "Hit-box-less" mode so that they could take more interesting pictures. (Read: Obviously not ALL of the pre-release pics use this.)
My picture example is WFT's ftilt.
As you can see, her very obviously a hit-box back leg is not hitting Lucario.
Also, Link is definitely using an attack (I think, Fsmash.) in the pic of Zelda and Link, and
he ain't hittin'.
EDIT : lol. I could've SWORN I was already on the last page. Pardon the out-of-place-latenesssssss.