It's been out for a while, but a tough one to find. I've personally received several emails about where to find these lenses as many are dying to add this to their Sony kits. Once in stock, they SELL OUT FAST! So for those of you hunting for the Sony 24-70mm G Master, you can find it right now via B&H (click here).
And if you want a full Hands On Review of these G Master lenses, check out the Explora Article with B&H (found here).
Hands-On Review: Sony 85mm + 24-70mm G Master Lenses Deliver Superb IQ