Alongside the overhaul to the algorithms, work is also proceeding on redefining and redistributing abilities for Disciples of War and Magic. This is a hefty amount of work, and not all classes will be ready by patch 1.19. But rather than a partial release, we’ve decided to save the implementation of all classes for 1.20. We’ll make the details of the planned changes available when 1.19 goes live, and monitor player feedback as a way to help define our direction. In the meantime, we’ll keep on performing balance tweaks to the current class system in coming sub-patches based on ongoing feedback from the community.
From Letter from the Producer XVI: http://forum.square-enix.com/ffxiv/threads/20998?p=292495#post292495

I wanted to ask this during the live event, but I'm not so great with Twitter and it never posted.

I know there's a lot going on today, and I'm grateful for the hard work of everyone at SE. But, I was wondering if we were still going to get what Yoshi-P mentioned in the quote above?

I know a lot of players that are like myself and have been waiting for this to decide what to level, especially if it'll finally hint at who gets to be Black Mage.