There’s an updated (July 2016) CRM Online Licensing and Pricing Guide. The main addition is the CRM Online Project Service Automation Add-On USL (page 12) which provides users with capabilities for setting up a project organisation, engaging with customers, and managing and closing projects. Naturally, as an Add-On, this licence requires users to first be licensed with a CRM Online Basic USL or higher.

As usual, find this Licensing Guide with all its friends here: http://bit.ly/MSLicensingGuides.