Npgsql2 has been RTM :-)

Npgsql is a .Net Data Provider for Postgresql. It allows any program developed for .Net framework to access the PostgreSQL database server. It is implemented in 100% C# code. Works with Postgresql 7.x and above.

Npgsql2 Supports .Net 2.0 and 3.5 and there is even added support for the EntityFramework

You can download all the goodies here: http://pgfoundry.org/frs/?group_id=1000140