I've HEARD of some IPA's being hazy before, but never seen it. My IPA seems pretty crystal clear as well as most bottles I've drinken. The IPA's I've enjoyed on draft have been pretty clear, as well, but not sure I would call them "crystal" clear.
However, I'm sure most of the bottled IPAs undergo filtering, whereas the tapped IPAs, including the A.B. probably does not... *shrug*
They probably just throw it in the description in case they get a hazy batch it won't scare someone off... I'm sure it's probably pretty clear, say in comparison to a wheatbeer or something.
EDIT: Wish I could try to Alaskan Brewing stuff... Doubtful we are getting that in PA. :/