So as Day 1 Keynote has now taken place, several additional anouncements have been made; with respect to UC, the most significant being the announcement of Office 365 E5 Licensing SKU…
From a recent summary email;
New Office 365 E5 offering: In October, we will introduce a new premium Office 365 enterprise suite. The new E5 plan will include Cloud PBX, analytics, Power BI, and advanced security capabilities, providing partners with a complete productivity and communications offering for their enterprise customers.
Stay tuned for more updates as they come through!