Bandai just updated some of their products pages.
Glanced at the updated SHF Darth Vader:
https://tamashii.jp/item/12972/, and noticed:
>left and right replacement wrists, EACH SIXThat's like total interchangeable 12 hands (excluding the standard default closed fist hands on the figure).
Also, the official height is 17cm. Pre-order starts on Monday (June 3rd JST).