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