Skype 12.9.604.0 for Windows 10Released November 29, 2017
Stay on top of your day with help from the notification panel.
Quickly jump back into conversations to see reactions to your messages and @ mentions.
Chat instantly - you no longer need to add your friends as contacts.
Simply find them on Skype and start chatting one-to-one or in a group conversation.
Express how you feel during a call with emoticon, text or photo reactions.
Share your virtual world and activity with others over a Skype video call in Windows Mixed Reality.
Improvements to volume control of other apps when Skype is active.