One of the lesser-known new features in iOS 10.3 is the ability for third-party apps to offer alternative home screen icons, and today the first major apps have been updated for these new capabilities, reports TechCrunch. Both MLB.com At Bat and NHL now provide the ability for users to change the default home screen icon to reflect their favourite team’s logo. Both apps will prompt the user initially to select an icon to use when first re-entering…