Regarding TIMA hardware that's hidden.

[YashAgarwal]

Hey everyone after Android 12 TIMA is hidden from system information, but actually its present. That's a hardware feature.

Knox's TrustZone-based Integrity Measurement Architecture (TIMA) allows storage of keys in the container for certificate signing using the TrustZone hardware platform

For more information you can see here

https://docs.samsungknox.com/dev/knox-sdk/about-keystores.htm

Regarding software update you can update there's nothing removed.

For reference this screenshot is from Galaxy S22U

[VedantKalore]

It's removed! Some bugs think 🤔