Ethereum's 166th Consensus Layer Core Developers Meeting focused on key updates regarding Fusaka and Glamsterdam. The activation of Holesky is progressing well, with the first Holesky BPO scheduled for October 7. In the Glamsterdam update, developers are shifting focus, with a deadline for non-headline EIPs to be set one week after the Fusaka mainnet date is confirmed. Additionally, discussions included the separation of payload splitting from ePBS Trustless Payments.