Evylen,
WSAD, the
IDE, is changing its name to RAD. WAS (WebSphere Application Server) will be leaving its name alone.
From
IBM:
WebSphere Application Server Version 6.0 will add a number of features to simplify the development and deployment experience for developers�enabling the �pay-as-you-go� notion of on demand computing. Collectively, these features are referred to as WebSphere Rapid Deployment (WRD). WRD introduces two key concepts: annotation-based programming and deployment automation.
So it looks like WRD is a feature, not a substitute, for WAS. It looks interesting. (The article goes on to explain the new features.)