double exp tomorrow?

okay so theres people saying different things. So is it double imperial and balthazar or what? i'm pure confused. Someone told me if i trade 25000 imperial i get 10000 balthazar? someone please explain me whats going on tomorrow haha. Ty.

http://wiki.guildwars.com/wiki/Weekend_events

your recieve double balthazar and Imperial faction when you're playing. The exchange rate is not affected.

ty, thats awesome