User blog comment:Leolab/Update to Battle Reservation Policy: Expiration Dates/@comment-5795750-20130926002325/@comment-422690-20130926022307

Reserved battles in "Seasons" are indeed subject to this expiration date. Note that this does not prevent you from doing them yourself - it just puts it up for grabs for other users to do. And to be fully honest, do you really see yourself taking more than a year and a half for a season?