I haven't seen a new one; what I do know is the newer one is a progression from the older, not a new design. So I would expect there to be commonality between concepts but parts sizes will be different.
Whoa. The older, original XR*8 hub rotary shift disc wrapped around the bottom of the axle and pulled CCW to shift. The new,
redesigned XR*8(W) hubs rotary shift disc wraps around the top of the axle and pulls CW to shift.
Something is different inside.
Despite the redesigned XR*8(W) hubs being on the market for over a year now,
AFAIK Sturmey has yet to publish to the public overhaul/rebuild instructions.
tcs