is there gonna be a white version of Huntsman V3 HE Magnetic Mini 65% 8KHz?

While historically Razer’s released white versions after initial black releases there’s no ETA or even confirmation they’ll do that for this Huntsman.

Your only option as of right now is either buy the current black version and swap PBT caps https://www.razer.com/gaming-keyboards-accessories/razer-pbt-keycap-upgrade-set or there are still other white Razer keyboards available.