The phrase "new nomenclature" refers to a new system or set of names or terms that are used to describe things. It means that there has been a change or update in the way things are named or categorized. Full definition
The new 2.0 - liter 4 - cylinder turbo and 3.0 - liter 6 - cylinder turbo boast more power and torque, and come with new nomenclature; BMW 4 Series coupes, convertibles and Gran Coupe 4 - door models with the 4 - cylinder are now known as 430i, while the 6 - cylinder models are 440i. (kbb.com)
Announce new nomenclature system, to denote hierarchy and accommodate expanded future portfolio. (automobilemag.com)
And even if the name has changed according to the company's new nomenclature pattern, the SLC is a mid-life facelift of the SLK. (carwale.com)