There’s an updated (November 2018) Dynamics 365 Licensing Guide. The main changes are the addition of the Dynamics 365 AI for Sales app (page 15) and some extra clarity around the new Order Lines add-on (page 45). You’ll also notice that some fairly major restructuring has taken place.
Find this guide alongside the rest of the Microsoft Licensing Guides here: http://bit.ly/MSLicensingGuides.