Uh... 2 gens? iMacs are on Kaby Lake which is last gen. Anyway, the iMac doesn't have Coffee Lake CPUs because they're barely any different than Kaby Lake, or e

Uh... 2 gens? iMacs are on Kaby Lake which is last gen. Anyway, the iMac doesn't have Coffee Lake CPUs because they're barely any different than Kaby Lake, or even Skylake for that matter. Intel is basically rebadging CPUs at this point while they sort out their 10nm process. The main driver of a refresh would be upgrading the GPU and some connectivity options at this point.