So, the wife and I are going down on 01/24-27 on a cruise then at the world from 01/27 to 02/02. I was chatting with a castmember via their webchat feature on the Disney site inquiring if/how I could upgrade a room only reservation to a package (to take advantage of the free dining promo if/when it's announced. I found out that I cannot "upgrade" it to a package and would have to cancel/rebook. In light of this info, I've decided not to do a room only ressie, however he did indicate that package rates would be available "very soon".
Whether this means anything, or that is just the packaged response at this time of year remains to be seen. If I get within 180 days of our trip and 2013 package rates aren't announced, I'll likely book the room only anyways, since I can carry over my ADRs when I rebook to a package.