From DeveloperWorks, What’s new in WebSphere Process Server V6.1.2

IBM WebSphere Process Server is a powerful runtime engine that can be used as
the heart of a Service Oriented Architecture. It is built on WebSphere Application
Server, and includes WebSphere ESB, enabling you to run integration modules created with
WebSphere Application Developer, mediation modules, and J2EE applications. This article
examines the features new to WebSphere Process Server V6.1.2. Basic knowledge of WebSphere Process Server is required for this article.

Goes a step beyond the lis of features that I posted earlier with some user interface screenshots.