It’s designed to connect more deeply to your Office 365 content and showcase some of Microsoft’s language learning capabilities. For example, when you sign into your Microsoft account (it only works with work, school, or university accounts for now) you’ll be able to search for and attach files stored in OneDrive.
Even if you don’t have an eligible account, you can use the keyboard to translate what you type into another language and search through your phone’s contacts. The keyboard is still in preview mode, so it’s bound to have bugs and missing features (the most annoying is that there’s no autocorrect). The interface is also rather plain, without any extra themes or customization options.
If you have a compatible account and want to try it out, grab Hub Keyboard from the Play Store.
Why this matters: Microsoft’s newfound religion of cross-platform productivity is really paying off. Microsoft Garage in particular keeps cranking out a string of Android apps, like the recently updated Next Lock Screen. Expect this keyboard and SwiftKey to eventually join forces in some way, so Microsoft can offer more language smarts to Android and other platforms.