This qualifies as even less trustworthy than a bus driver rumor but my parents are in WDW now and have been asking cast members if they know when the players might be there. The person they spoke to at the concierge desk at Kidani said "they were already here on Monday" which is quite obviously not true since they were in the air flying back from LA all day Monday. LOL So, no information there.
The second person they asked (described by my mother as "a manager looking person") at Epcot said they are not doing it this year because this was not a particularly noteworthy win like the Sox in 2004, the Cubs a couple of years back and the Astros last year. Again, I don't trust this info at all and suspect that a "manager looking person" at Epcot would not be on the list of people in the know about these things but figured I'd share anyway. Also, if I remember correctly Mike Lowell visited after the Sox won in 2007 and that was not a noteworthy year for any reason. Does anyone remember if the Royals visited when they won a couple of years back or if the 2013 Sox visited?