Along with iOS 9.1, Apple released watchOS 2.1 on Tuesday. The update for Apple's smartwatch included support for several more language localizations, along with support for right-to-left user interfaces.
watchOS 2.1 includes new language support, Calendar fixes, and more
The update also fixed some issues with the Calendar complication, third-party app launching, and Power Reserve mode.
watchOS 2.1 is a free update you can find by launching the Watch app on your iPhone, then tapping General > Software Update. Apple Watch operating system updates take some time, so don't try starting the install unless you have time to spare.