I would be shocked if there wasn't some presence of the NFL and / or its players in the parks for "Pro Bowl Week". Even if its only NFL players being parade marshal's or autograph signings in various places in the parks I don't see either the NFL or Disney missing out on a chance to cross-promote especially with the younger demographic / kids WDW provides. Expect the ESPN Club to be a happening place during that week. My guess they just haven't finalized a lot of the plans yet. This may not be an event that will cause havoc around all of WDW, but there aren't many special events that can. This will certainly bring large crowds to at least certain areas of the parks at times. Just the additional media coverage alone and hoopla that entails will make a noticeable difference.