I got mine from eBay seller luck-market. It looks great and a huge improvement over the stock head. Look for "Delicate Paint 1/6 Scale Blade Runner Head" on EBay. Good luck, hope you get a good one.
Timewalker has this arriving to them late December/ early January. I expect BBTS won't get theirs until at earliest late January. Hope for sooner, but I'm not holding my breath.