Release Candidate 1 of the upcoming Version 8.3 of PostgreSQL is now available for download : Source Binaries
Currently there are no major outstanding issues (and only a couple of
minor ones) for 8.3, so we may not build a Release Candidate 2. This
means that it's critical that you download and test 8.3RC1 this week in
order to catch any further issues, since any bugs you miss could end up
in 8.3.0.