Probably just means you can use PL or points in it, your choice? Or maybe there is a scoring system for it thatbyou can ALSO use for tournaments? so like maybe two modes you could do a tourny on? We'll know soon enough. The ITC has said they will likely be using book missions for a while after the 9th drops, to give them time to adjust where necessary, if at all, for competitive play, interestingly.