Alpha release notes draft
From PostgreSQL wiki
The third alpha release for PostgreSQL version 9.1, 9.1alpha3, is now available. This alpha release contains several new major features added since the alpha2 release. Please download, install, and test it to give us early feedback on the features being developed for the future versions of PostgreSQL.
Features added in 9.1alpha3 since alpha2 include:
- KNN GiST, otherwise known as order-by-operator support for GiST, to optimize nearest-neighbor searches
- Additional instrumentation and monitoring facilities
- Several new built-in functions: format(), pg_read_binary_file(), pg_describe_object()
- New libpq functions: PQping(), PQlibVersion()
- The capability to produce crash dumps on Windows
More detail is available in the release notes: http://developer.postgresql.org/pgdocs/postgres/release-9-1-alpha.html
These new features mean that we need you to participate in testing them. If you are able to help with organized alpha testing, please see the Alpha/Beta testing page: http://wiki.postgresql.org/wiki/HowToBetaTest
Alpha releases are not stable and should never be used in production; they are for testing new features only. There is no guarantee that any features or APIs present in the alphas will be present, or the same, in the final release.
Alpha release information page: http://www.postgresql.org/developer/alpha
Download the alpha release here: http://www.postgresql.org/ftp/source/v9.1alpha3/
Alpha releases are primarily made in source code form only. Binary packages for some operating systems will be prepared in the coming days.