This update also includes the following improvements: To learn more about Photos, please visit: It’s easy to upgrade your iPhoto library to Photos - just launch the app to get started. Purchase prints in new square and panoramic sizes.Create professional-quality photo books with simplified bookmaking tools, new Apple-designed themes, and new square book formats.Perfect your photos with powerful and easy-to-use editing tools that optimize with a single click or slider, or allow precise adjustments with detailed controls.Access your photos and videos stored in iCloud Photo Library from your Mac, iPhone, iPad, or with any web browser.Store all of your photos and videos in iCloud Photo Library in their original format and in full resolution.