The codes for Jan.-Feb. came out in Sept. last year.
If you're concerned about dining reservations, you have a couple of options. First, you can still book at the 180-day mark. You don't need a reservation to do this--when staying offsite, I had no issues getting good dining choices this way. Your other option is to book a room-only and put down the $200--this gives you the 180 +10 day reservation window. That's nice if you absolutely HAVE to have CRT or BOG, that kind of thing.
If you aren't sure of your dates, you could go the first route for your big dining choices. You know, booking Akershus for every possible Friday that you might be in WDW, for example. If you do this, you need to keep track so you can cancel the unneeded ones--remember, they take a credit card for most ADRs. And some places, like CRT, charge your card immediately, so I'd be judicious.
Since our dates are set, I'll probably do the room-only booking thing.