iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Find My Friends Updated With iOS 7 Redesign
Other than the new design, Find My Friends does not appear to have any new features.
Last week, Apple released updated versions of iBooks and iTunes U with similar redesigns.
Find My Friends is a free download for the iPhone and iPad from the App Store. [Direct Link]