Because Minuum is a more radical departure from the standard keyboard, it will often scare off users from trying it, and the $3.99 price tag doesn't help that issue at all. Until now, the only option users had was to try the app for 15 minutes (the Google Play return window), so adding an option for a 30-day free trial could go a long way to getting more people to test out the keyboard.
Version 2.0 also finally sees Minuum leave behind the beta tag. The app has gotten some visual tweaks to make it even more compact. It has added emoji support and options to download language packs. And, it still has all of the other cool features like being able to expand it into a full keyboard when needed, smart word prediction, and it will also learn how you type in order to get better over time.