With the reports suggesting that a new MacBook Air and a 13-inch Retina MacBook are on the way in 2018, both cheaper than their predecessors, it wouldn’t surprise us to see an iMac 2018 follow on their heels. The iMac is ready for an upgrade, too. After being refreshed with Intel 7th-generation Kaby Lake CPUs in mid 2017, Intel released 8th-generation Kaby Lake and Coffee Lake processors. Now the iMac is one (one and a half?) generation behind when it comes to processing powe