At the end of each year, the BAO maintainers need to be re-elected and set forward a plan that must be approved for them to continue forward as maintainers.
This proposal lays out a new one-year plan and a series of significant changes that the current Maintainer galaxy thinks are needed for the protocol to move forward.
The entire lengthy proposal can be seen here: https://gov.bao.finance/t/bip-23-2023-bao-annual-roadmap/1189