Yeah, I believe it has been stated that a cap increase will come with an official expansion, and will not be a mere patch regardless of how big said patches may or may not be. It won't be any time soon. Remember that hardly anyone has finished their mythology armour sets by now, let alone for more than one job, and then there is allagan! All of the current iLVL90 sets will be necessarily rendered semi-obsolete with a cap increase to create a draw for the new gear, and they won't be doing that any time soon while so many people are in the midst of farming the current iLVL90 equipment.