Just saying, but if I was in your shoes, get the 89 Batmobile now before the price becomes no longer obtainable. Then, when or if the 1/4 scale TDKR Bat's come out, you can then get the exclusive version somewhere within reason. Rule of thumb on ebay, when the DX 12 came out, there were pages and pages of preorders for this. Then when if actually shipped, there were still pages and pages for sale. Now look on the 1/4 side, currently on ebay there are only three for preorder. Then around the web from BBTS to Sideshow themselves you still can preorder this so it is definitely not sold out!
Anyway, moral of the story is never preorder something that far out, I have been burned to many times by Hot Toys release dates. I have learned to keep the cash on hand and if it is something that I have to have on day one shipping, then fire up ebay and buy from one of the local Hong Kong dealers, albeit higher prices but you will have it in hand!!!!!