I am happy to announce release 0.4 of Hpc, a tool for Haskell developers. Hpc is a tool-kit to record and display Haskell Program Coverage. Hpc includes tools that instrument Haskell programs to record program coverage, run instrumented programs, and display the coverage information obtained. This version includes many changes since 0.2, including a small DSL for expressing coverage "holes". More details can be found on the Hpc web-page. http://projects.unsafePerformIO.com/hpc Feedback and feature requests are encouraged. Andy Gill