I have some slight blochyness on my 2012 GC in Mineral Grey. The worst of it was on the leading edge and front of the hood. When I had my 3M Clear Bra installed, it took care of that area. The rest of the car is not that bad, although I have found a few dropouts (small specs) in the paint - again not a big deal. It appears to be getting better with time, and clay-barring and polishing the GC myself made a huge improvement. Here is a link to the TSB, which essentially is having your dealer do a buff & polish job:
By the way, everyone needs to give wk2jeeps.com and Milous a HUGE atta-boy for the site, accurate information and timely updates. I know my dealer was originally skeptical when I supply copies of TSB's when I bring my GC in for service. But they now know that the information is accurate and as good or better than the updates they get.