https://www.anandtech.com/show/15039/the-intel-core-i9-10980xe-review/14

"More 14+++, No 10nm in Sight"

"To that end, we get more 14nm products. Officially Intel doesn’t like to mention whether a product is on its 14nm process, 14+, 14++, or anything beyond that"

https://www.elinfor.com/knowledge/the-battle-of-14nm-has-another-meanings-p-11238

"From Skylake（14nm）, Kaby Lake（14nm+）, Coffee Lake（14nm++）to the 14nm+++ released in 2018, the company has kept the upgradation of 14nm process. Intel had planned to release 10nm in 2016."

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