not packed per say,
but i have begun putting items bought on clearance into a pile in the attic, and the summer clothes will make it up there soon.
we leave in 120 days or so.
in general, i start getting things organized and laid in a suitcase
about a two weeks before any trip, not just WDW.
that way i know what we have, and what i need to get to avoid last minute running around.
the "travel bag" is packed right before we head out the door ( personal items, razors, etc)