Federico Viticci wrote a lengthy review of iOS 9 in the most appropriate way possible, on an iPad. It’s explains everything you need to know in an entertaining, in-depth article. As someone that has mostly been using iOS 9 on an iPhone, it’s refreshing to hear things from an iPad-using perspective:
This year, the iPad is getting the first version of iOS truly made for it. After too many unimaginative releases, Apple has understood the capabilities of the iPad’s display and its nature of modern portable computer. Free of dogmas and preconceptions of what an iPad ought to be, iOS 9 fundamentally reinvents what an iPad can become going forward.