A roundup of PostgreSQL news and research covering several topics: a proposed native column store index (vertical clustered index) for hybrid OLTP/OLAP workloads showing up to 46x query speedups; B-tree GiST index improvements in PostgreSQL 18 with 4-5x faster build times and 3x better query throughput; PG Dog's new listen/notify support using Rust/Tokio for scaling pub/sub to millions of clients; Multigres plans for high availability with synchronous replication and durability policies; a change in how enable/disable planner parameters work in PostgreSQL 18; a deep dive into replication slot LSN semantics (confirmed flush LSN vs restart LSN); and a comparison of Graviton 2 vs Graviton 4 CPU utilization running CloudNativePG showing ~4x efficiency improvement.