Ethereum's 169th consensus layer core developers meeting focused on potential changes to the FOCIL consensus. Initially considered for the Glamsterdam upgrade, developers are now more optimistic about implementing it in the Heka upgrade. Discussions on including FOCIL in Heka will begin before the formal scope discussions, with a follow-up planned in two weeks. Additionally, the meeting reviewed the progress of the Fusaka upgrade, noting the successful activation of the second Blob Parameter (BPO) hard fork on the Hoodi testnet on November 12. The Fusaka mainnet upgrade is scheduled for December 3.