Geth v1.10.6 is a hotfix release. This resolves a consensus failure on the Ropsten testnet.
See the upstream release for a summary of the incident: https://github.com/ethereum/go-ethereum/releases/tag/v1.10.6
As a reminder, the London hard fork for the Ethereum mainnet is scheduled for block #12965000, estimated for the 4th of August, 2021.