There’s an updated (May 2017) Dynamics 365 Enterprise Licensing Guide with two main changes. Firstly, the inclusion of the new Operations Activity USL for those users who are heavy users of Operations but don’t need the use rights of a full user. It’s introduced on page 12 and you can see what rights this USL gives in the tables on page 35 onwards. The other change is the removal of tiered pricing for the Team Members USL with page 24 confirming that it’s now just available for Plan 1 USLs.
Get the guide at the usual place: http://bit.ly/MSLicensingGuides.