We'll be releasing a closer integration between Agent Vault and Infisical in the coming 1-2 weeks!
The way we see it is that you'd still need to centrally store/manage secrets from a vault; this part isn't going anywhere and should still deliver secrets to the rest of your workloads.
The part that's new is Agent Vault which is really a delivery mechanism to help agents use secrets in a way that they don't get leaked. So, it would be natural to integrate the two.
This is definitely on the roadmap!