Microsoft announce that Microsoft PowerApps is generally available: http://bit.ly/2fuF4yT. PowerApps is all about creating apps (perhaps unsurprisingly!) and if you’re new to this product then I’d recommend watching the video on this “Introduction to PowerApps” page since it will give you a good insight into the sorts of things you can do: http://bit.ly/2fuL4rw.
PowerApps is licensed by user and Office 365 and Dynamics 365 licensed users have some basic PowerApps functionality included, and there are also more advanced standalone plans – PowerApps Plan 1 and Plan 2. Users licensed with the new Dynamics Enterprise Plan 1 or Plan 2 have PowerApps Plan 2 functionality included.
This page gives you a summary of what’s in what plan: http://bit.ly/2fKdhOl and if you want some examples of different apps and how they would be licensed, then this page is a good resource: http://bit.ly/2eNu1iG.