PostgreSQL 8.4 has been released with its usual collection of shiny new features including Window Function support which means that you can now do OLAP with an Open Source database (How nifty is that!) All the other bits and bobs are listed on PostgreSQL 8.4 Feature List
"More software projects have gone awry for lack of calendar time than for all other causes combined"
Fred Brooks, Jr., _The Mythical Man Month_