Disneyfanatic!!
Member
Your optimistic 15 month estimate is assuming construction starts right on January 1st, 2013, just after the Rose Bowl Game ends.
Disney clearly stated they plan for construction to start "in 2013", a rather vague timeframe. That could be April, 2013 or November, 2013 or any time in between.
The start of Avatar construction could still be a full two years away.
I think this Avatar announcement is the most interesting because Disney has never really announced something like this so far in advance. Generally the announcement would come three years before opening, just as the bulldozers have moved in for clearing and the attraction concepts and land layout has been locked in.
The announcement actually says construction is set to begin by 2013. So late 2012?