Partial history expiry announcement

All Ethereum execution clients now support partial history expiry under EIP-4444, which lets node operators remove pre-Merge block data while full rolling history expiry is still in progress. Users can expect to reduce the disk space needed for a node by 300 to 500 GB, allowing a node to fit comfortably on a 2 TB disk. The article states that the default security model is unchanged, since clients have not fully validated the chain from genesis for over 5 years and execution layers will continue to provide all headers for cryptographic verification. History will remain available through institutional providers, opt-in torrents, and the peer-to-peer network, with mirrors listed at eth-clients.github.io.