Could you comment briefly on what this is and does, beyond the obvious?
Is it intended to be essentially Camel-centric, or a more generic enhancement / replacement for such tools as junit?
The testing functionality in Camel is still used for creating JUnit tests - so it is not replacing JUnit. It started out mainly for testing Camel applications themselves but can also be used as a test driver for other applications. It has components for receiving and checking to make sure that certain conditions are met in the message (mock & test components). It also has a dataset component useful for generating large amounts of data for load testing.