I'll have to fill you in on my experience once it is fully known, but I'm currently in a GTY balcony cabin that I booked in October. The ship has been listed as sold out for my category and all above since January and the rest of the ship for the past 2 weeks. So far, I don't have an assignment and it is 20 days to sailing.
I'm not sure how this will pan out but I am worrying a little.