Guys, I wouldn't read too much into this yet. In fact, the dates may be more telling than you think. With the exception of last year, the free dining offers have generally been released in late April, and usually begin right after the summer offer ends. If you remember the bouceback offers last fall that were for free dining this fall, they began August 18th.
So far, everything is making perfect sense to be the same as years before.
Some history:
2009 - Free dining began 8/16 and was available for booking on 3/30.
The summer room only discount expired on 8/14 and became available on 3/29.
2010 - Free dining began 8/15 and was available for booking on 4/29.
The summer room only discount expired on 8/8 and became available on 5/7.
2011 - Free dining began on 8/28 and was available for booking on 4/28.
The summer room only discount expired on 8/13 and became available on 4/1.
2012 - Free dining began on 8/25 and was available for booking on 3/1.
The summer room only discount expired on 8/14 and became available on 4/2.