I'm investing in second year 16nm, the first shrink is usually a little buggy, would like to do the same with CPU, Zen looks to be 2017 now and intel's 10nm is delayed also, I'm thinking this is the end of regular die shrinks. I may buckle and get a 2011, but I want to see how DX12 changes the landscape.
Zen is definitely H1 '16. Zen APU is (probably) '17.