I know it has been discussed, and I think it came down toooo:
There's going to be 3 castles open, but only 2 per WoE. Eg, Pront+Gef open one day, Pront+Pay open another day. Same Pront castle for both, if I recall correctly.
Sadly, Pandora has informed me that there is yet no ETA on the change.
Sorry guys. Please don't eat my face, I need it. 
You'll need to hang around for an ETA from her, I'm afraid, since we're all at the mercy of her phenomical cosmic powers*!
On the slight upside, I'm getting the thread for the next PvP tourny ready? :DDDD
Should be up today, depending on how distracted I get. :X
*
Itttty bitty living space.