It looks like the chip shortage, which has greatly affected Nvidia and AMD in the last six months, has reached Intel as well. According to the source, the company is faced with a shortage of certain chips that could affect the availability of laptops with Tiger Lake processors.
These CPUs are known to support Thunderbolt 4 and USB4. And the problem lies precisely in the shortage of controllers to implement these interfaces. More precisely, power delivery controllers (PDC). They are also called USB Type-C and USB PD Controller.
The source claims that the manufacturers of such microcircuits, and this is Texas Instruments and Cypress, are talking about an impending serious shortage of such controllers. The first company no longer even offers such products in its online store.
Intel has already published a document for laptop manufacturers saying they can replace the current TI 994AD controllers with the TI 993AC / 994AC. The problem is that the latter are not a complete replacement for the former. In particular, they do not have full USB4. Intel advises partners to either not mention USB4 support at all in their products, or label it as USB4 compliant.
As a result, in the near future, when buying a laptop based on Intel Tiger Lake, you should be careful about USB4 support.