Skype for Business upgrade

Regarding all hype about Skype for Business last days her is short overview about it

1. Skype for Business is available as upgrade for Lync client.
2. Upgrade is available from 15th of April as KB2889923.

3.

Knowing which KB is bring this change, System Administrators or responsible persons for updates will be able to control will this update will be applied or not. This will give most of companies time to adopt and test new functionalities of Skype for Business.