With April 14th update for Lync 2013 / Skype for business - KB2889923 total interface change to new look :) its seem very familiar: the contact list, Presence and colors, buttons and icons ...should make you feel like home with ur consumer client/ Skype .
How to add user to skype for business client
Outlook integration you can see like this on calender
Collaboration features will be like this
When your dialing out it will be likes this, Nice interface and new colorful buttons and Popular feature on Skype Call Monitor feature Available in Skype for Business. With Call monitor will help you to move in/out from SfB window. Simply double-click or double-tap the call monitor.