The challengers in Seven-Sky v. Holder yesterday filed their reply brief at the D.C. Circuit. You will remember that this is the case in which the District Court upheld the minimum essential coverage provision under Congress's power to regulate interstate commerce, and in which argument will be held September 23 (before Circuit Judges Harry Edwards, Laurence Silberman, and Brett Kavanaugh).
You can access the appellants' reply brief here.