Intel announced that the next generations of CPUs (11th and 12th) will no longer support the SGX technology (see data sheet). SGX is the secure enclave in Intel CPU. The SGX isolates the program and data in its environment from the insecure Rich Execution Environment (REE). Thus SGX-based applications could act as a Root of Trust.
At least, this was the promise. Unfortunately, starting with Spectre-like attacks, SGX was under the fire of many interesting exploits (for instance, VoltPillager). Thus, it seems that in its current form, SGX cannot be a trusted secure enclave.
For most consumers, the main consequence is that future PCs will not support any more UHD Blu-ray. Indeed, the content protection standard AACS2 mandates a Secure Execution Environment with a Hardware Root of Trust (HRoT). For Microsoft Windows, the solution was the use of SGX. Some applications were also basing their security model on SGX. They will have to find an alternative that is not necessarily available. TPM offers a valid HRoT but not a Secure Execution Environment. Current tamper-resistant software and obfuscation technologies may not be sufficient.