Earlier than BBTS was listing (January), the First Edition Deluxes are now out in America, including TRU online.
Now for the 4 MONTH wait until TFPrime toys show up here (and probably not the First Edition either).
Since Hasbro Australia wouldn't say if the March release includes the First Edition figures, I'd recommend getting any you are keen on, as soon as the price comes down on the secondary market... because if they don't show up here in March, these First Edition figures are likely to be sold out globally by then, and be going way up in price.