The Lync client replacement will be rolling out “as an update to Lync on April 14th as part of Office monthly updates,” according to a Microsoft blog post, though IT administrators will be able to control how and when the Skype for Business update is rolled out to users.
Customers currently using Lync Online with Office 365 ProPlus, Office 365 Business Premium or Office 2013 will see the new Skype for Business client replace the Lync client. But those using Lync Server today will continue to see the Lync UI as the default experience.
A Microsoft spokesperson said the plan is to roll out the Skype for Business client “to all customers by the end of May.” Microsoft also will be automatically updating the Lync Online Service to “Skype for Business Online” by the end of May. More