I saw the S-yard Stark back in around October last year so it's definitely not the newest. According to what I've seen in the forum and online store I would say Maxima ST and KW Air are the latest non-conform driver.
It's available in the pro shop.
Anyway there're 4 type of finishing: Raw satin, Plated satin, Black, and Gun Blue.
T now it's clear between raw and plated satin, do you have any pics of Gun Blue finish? And do they offer that finishing in iron set as well?
Actually the st didn't look that much close face, almost look like a square face too me.
The Ryoma UT is look a little bit big at the address compare with Yammy UT, at first I feel uncomfortable with it but after those great result from all the shot I hit today I totally forgot about the size.