Bitcoin Optech #289: Post Cluster Mempool Relay Enhancements & More This issue covers ideas for relay enhancements after cluster mempool is deployed, describes results of research into the topologies and sizes of LN-style anchor outputs in 2023, announces a new host for the Bitcoin-Dev mailing list, and encourages readers to celebrate I Love Free Software Day by thanking free software contributors. https://www.nobsbitcoin.com/bitcoin-optech-289/