I'm sorry if this has been posted or mentiond already. I was reading a novel called: "Roxas - Somewhere in time", and I found this:
So, does this mean we will be going to Hollow Bastion in Days?“The fact that the Keyblade Wielder has gone into sleep matters not,” said Xemnas, easing the tension that had built up at Xigbar’s words. “Axel, you will take Roxas to Hollow Bastion. It appears something is afoot around the Keyhole.”