If you listened to this week's DNR episode, with Billy Hollis, Vault is one of the products Billy mentions toward the end of the show:

SourceGear Vault is a source code control system designed specifically to replace Microsoft Visual SourceSafe.  Vault is built on Microsoft SQL Server and .NET with a design that emphasizes reliability, network integration and openness.

Today, SourceGear Vault 3.0 was Released.  “We are quite excited about this release of Vault.  It will be faster, more polished, and easier to use than ever before.  It deserves to be called 3.0.“ - Eric Sink.  Very cool.

-Brendan