My first impressions were that the colours look great. But are the points more rounded than the Knitpro's we're used to?
A visual comparison says yes, slightly. Here's a comparison of the same diameter needle, arranged by sharpness from L-R - Addi's regular (Turbo or Premium), KnitPro Zing, Knitpro Nova and Addi lace.
So the big question (because this is what you'll be doing with them) is how do they feel to knit with?
The points are perfectly fine, I do like a sharp point but had no trouble with these at all. The finish is more of a satin finish than the slippy polished finish of the Novas which again is down to preference and the material you're knitting. They felt nice and friendly in the hands.
Circulars, double-points and single-points are now in stock: http://p2tog.com/zing-range/zing-range.html