How did this turn into rip on Disney Dining thread!!! Oh wait, every thread on the Rumors board is turned into a rip on Disney thread.
OP - it is impossible to know what Disney will do in the future.
However, they have offered
free dining to the public select weeks in Oct/Nov/Dec in both 2009 and 2010. They also offered it to select guests (PIN holders and Visa holders) in 2008.
They also have EXPANDED the amount of days of FD in 2011, adding dates in the spring as well as the traditional dates in August and September.
I would say there is a better than 50/50 chance there will be SOME weeks for free dining in Oct-Dec 2011. But, until they officially put it out, you won't know. It'll probably be announced in July, as it was announced July 27th in 2009, and July 6th this year. (In 2008 - the extended FD for Visa holders wasn't announced until September - the discounts have moved earlier each year.)
Full disclosure - I am hoping for FD in Nov 2011 myself...though we will likely go regardless..we just may stay value without FD - and moderate with.