Always looking forward to the future of PHPUnit, Sebastian Bergmann has started gathering some ideas for future additions to the project:

I started to collect ideas for features that I would like to see in PHPUnit but currently lack the time to implement myself.

The two listed in this post are:

• Mutation testing - an approach where the testing tool makes some change to the tested code, runs the tests, and if the tests pass displays a message saying what it changed
• Web Interface for Test Result Database - output viewer for the database logging PHPUnit is now capable of.