Just got in the new V4, not a review as haven't ridden it yet, but an unboxing.
I rode a new 2017 V4 6m today. Was probably asking a lot of it as it wasn't really windy and quite gusty offshore There are technical improvements in this model but I found it flys very similar to last model. Most noticeable difference was more tautness in canopy. You can push the kite really hard through turns or purposely stall without the flutter of first models. This makes it feel smoother. The trailing edge battens are longer. Struts slightly thicker. Someone in the know could list the individual changes. Power seemed same as 2015 & 2016 V3. Turning speed same if anything up a fraction. I was getting better drift, but would need a few more rides to confirm. 
Demoed the 8m on the weekend. Better drift and so smooth compared to V3. Very good upgrade bought an 8 and a 10. Anyone want a 9m V3 its in the buy and sell :)
