Apple has released iOS 9.3.2 for the 9.7-inch iPad Pro. It addresses an issue with bugs that "bricked" some tablets when users attempted to update them.
iOS 9.3.2 can be downloaded via the Software Update component of the iOS Settings app — or with iTunes on a Mac or PC. Builds are available for both the Wi-Fi-only 9.7-inch iPad Pro, and the LTE-capable model.