Multiple users of the iPad Pro Smart Keyboard have noted that a software update has begun rolling out to fix connectivity issues. As noted by iMore, Apple has posted a support document on its website detailing the update’s intended purpose:
If your iPad Pro wakes up from time to time when it’s connected to a Smart Keyboard, here’s what to do. To solve this issue, disconnect the Smart Keyboard from your iPad Pro, and then connect it again. When iOS asks if you want to update the Smart Keyboard, tap Update.
The now solved issue revolves around the iPad Pro waking from sleep randomly when connected to a Smart Keyboard, but Apple does not say that it has addressed other Smart Keyboard issues such as an issue where the Command-Tab shortcut does not always navigate to the app-switcher.
iPad Air 2
iOS 9.3, expected to be released in March, includes a few other enhancements to the iPad Pro’s Smart Keyboard. Apple has altered a couple of the shortcuts, allowing for a Command + H combination to go to the Home screen and has added the ability for third-party Smart Connector accessories to be updated over-the-air.