Boeing 767s, being a relatively ‘narrow’ wide-bodied type, do not have the fuselage diameter to accommodate the Next Generation Club World product with high-sided pale grey seat surrounds.
Longhaul 767s therefore fly with what was originally called New Club World; most usually recognised as the version with the ‘fan’ divider.
Although it is undoubtedly an older product, and narrower than the latest iteration, some passengers report preferring its more solid feel, including a sturdier table and footstool. It is still fully, horizontally flat.
Funnily enough, I wold not be disappointed with club on the 76, as the older seats had some advantages.
The only downside is a ‘ridge’ under your legs, that was sorted on the next iteration, but if you get a little creative with a spare blanket (ET works best, as it’s fleece and squashy), then the experience is ace.