I haven't checked the state of the suite, but great to hear that someone is working on that! Interoperability test suits are super valuable for standards. Even if they might not cover all test cases and details of the specification right from the start.
Huge missed opportunity in not calling it QUICCheck.<p><a href="http://hackage.haskell.org/package/QuickCheck" rel="nofollow">http://hackage.haskell.org/package/QuickCheck</a>