I still have some concerns about tire clearance (2.4 feels like an ice skate to me after years on 2.6-2.8 and fat bikes) and the beefiness of the swing links/bearings, but this version seems much improved in the front triangle and more or less completely addresses the flex and play experienced with the V1 mold. I know a couple riders who own this version of the 831 and also own recent Santa Cruz models — they say the difference is negligible or even unnoticeable.
That said, nobody’s had any version of this bike long enough to explore all the issues that it can have — especially the V2 (revised rear triangle/links) and V3 (both ends revised with flat top tube, taller head tube). So be aware you’re still at least somewhat of a beta tester if you buy this frame. Expect at least some degree of fiddling, needing to replace the OEM bearings etc.