The nicest element of this is the categorization of tests. I have always practiced the seperation of tests into lightweight tests and tests that require deployment for instance. Manually altering hierarchies of TestSuites is a PIA.
It will be nice to see how this evolves.
Cedric is at it again :) This time he has take a pinch of JUnit, a touch of NUnit, mixed them together with his special sauce and out came TestNG. This new testing framework features: JSR 175 Annotations, flexible test configuration, and a powerful execution model (no more TestSuite).