Sunrise Calendar is now a universal app, adding a new design for the iPad in today's update to version 2.1. Also part of the update, Sunrise has a new Week view to both iPhone and iPad. On the iPhone, you can view three days at a time, while on the iPad, you can view five in portrait, and seven in landscape. To enter Week view, simply tap the three vertical bars next to the '+' button in the top right. Tap the button again to return to the standard view. The iPad version also supports a full month calendar view.
Sunrise 2.1 also brings support for background updating. By default, the app will check for changes every hour, but you can adjust the interval to be longer or shorter if you want.
You can download the updated to Sunrise Calendar from the App Store right now.