The keyboards we have on Android are already pretty good at what they do. That's not to say they're perfect, but any new entrant into this market needs to have a good angle. Microsoft's new Android keyboard is here, and it's called Hub. What does Hub do? It's a "hub" (get it?) for all your Office 365 content in keyboard form.
Hub appears to be a pretty straightforward keyboard. It's only tap input—no swiping. There are only a handful of settings to play with too. Above the keys is a bar with buttons that provide quick access to your clipboard, Office 365 documents, contacts, and Microsoft translation. To unlock the full power of Hub, you need to log in with an Office 365 account. If you don't want all those buttons up there, you can hide all of them or disable a few in the settings.
It's a little odd Microsoft would release a keyboard app after buying SwiftKey, but this is a Garage project. It's just an experiment for now. Perhaps SwiftKey will end up with some of the ideas from Hub down the road.