Glad this is finally live: https://security.apple.com/documentation/private-cloud-compute
Getting started with the Virtual Research Environment: https://security.apple.com/documentation/private-cloud-compute/virtualresearchenvironment
"The PCC Virtual Research Environment (VRE) requires a Mac with Apple silicon with at least 16GB of unified memory and the latest macOS 15.1 Developer Preview. For optimal VRE performance, we recommend using a Mac with at least 24GB of unified memory.”

