Intel doesn't like to officially use codenames for products once they have shipped, but those codenames are used widely to delineate different families (even by them!), so they compromise with the awkward "products formerly x" wording. Have done for a long time.

I wouldn't mind them coming up with better codenames anyway. "Some lower-end SKUs branded as Raptor Lake are based on Alder Lake, with Golden Cove P-cores and Alder Lake-equivalent cache and memory configurations." How can anyone memorize this endless churn of lakes, coves and monts? They could've at least named them in the alphabetical order.

The entire point of code names is that you can delay coming up with a marketing name. If the end user sees the code name then what is even the point? Using the code name in external communication is really really dumb. They need to decide if it should be printed on the box or if it's only for internal use, and don't do anything in between.

The problem, especially at Intel, but also at AMD, is that they sell very different CPUs under approximately identical names.

In a very distant past, AMD was publishing what the CPUID instruction will return for each CPU model that they were selling. Now this is no longer true, so you have to either buy a CPU to discover what it really is, or to hope that a charitable soul who has bought such a CPU will publish on the Internet the result.

Without having access to the CPUID information, the next best is to find on the Intel Ark site, whether the CPU model you see listed by some shop is described for instance as belonging to 'Products formerly Arrow Lake S", as that will at least identify the product microarchitecture.

This is still not foolproof, because the products listed as "formerly ..." may still be packaged in several variants and they may have various features disabled during production, so you can still have surprises when you test them for the first time.

So they should put it on the box. In small font on the back if necessary, but make it an official part of the spec sheet - don't pretend it's irrelevant.

AMD does this subterfuge as well. Put Zen 2 cores from 2019 (!) in some new chip packaging and sell it as Ryzen 10 / 100. Suddenly these chips seem as fresh as Zen 5.

It's fraud, plain and simple.

Product lines are in design and development for years, two years is lightning fast, code names can be found for things five or more years before they were released, so everyone who works with them knows them better (much better) than the retail names.

It means Intel M14 and M15 base designs. Except they don't use numbers.