Skype for Business Online Plan 2 is being retired from sale as of 1-July-2019.

You will no longer be able to acquire Skype for Business Online Plan 2 for instant messaging, presence, meetings, and peer-to-peer voice and video.

These features will continue to be supported in all Office 365 offers that include Teams, including Office 365 suites.

If you’re using Microsoft Teams Rooms or Surface Hub devices, you may want to consider the Office 365 Meeting Room license.

Read more:

https://techcommunity.microsoft.com/t5/Surface-IT-Pro-Blog/New-Office-365-licensing-options-for-Surface-Hub/ba-p/339238

Skype for Business Certified IP Phones: Microsoft Online Device Registration updates

Skype for Business IP Phone partners have made a code change to use partner specific application ID. When deployed, the customer tenant admin will be required to confirm consent to allow the third-party phone application to be granted the necessary permissions (the same permissions currently being used by Skype for Business IP Phones).

All certified Skype for Business IP phones must be updated by July 1st, 2019

Without the update, successful authentication to Microsoft services on IP Phones will fail. Customers are encouraged to work with their certified Skype for Business IP Phone provider to make the update before the deadline.