Galaxy Research VP Christine Kim summarized the 199th Ethereum Core Developer Execution (ACDE) conference call, where developers discussed and coordinated changes to the Ethereum Execution Layer (EL) this week; reaffirmed the decision to include EIP 7742 in Pectra as a precondition for adding blob capacity in the upgrade; Pectra Devnet 4 launched on October 18, and Busa and its team will conduct further testing on the client side on Devnet 4 in the coming weeks; Additionally, the developers discussed various specification changes that Pectra Devnet 5 should include.