The thing she does is mention things in books that you don't pick up on until you've read what they are used for...e.g. the way the Order of the Pheonix communicated was touched upon in Goblet of Fire. RAB might be mentioned in one of the earlier books and we just haven't picked up on it yet beacuse we didn't think it important when reading it.

Btw Slaynish, Goblet of Fire is coming out on 18th November here, so unless you lot get it before us, it will be realeased on 18th November in America.