The Highlights Tab will show you updates from your friends and contacts. Think of it as a timeline of what they are doing on Skype but they expire after 7 days.
The Skype chat window that will sync updates from other devices when you first access a chat on the device.
People list with search. Favorites are still there.
You can invite someone to Skype using other apps and services.
People search. There are a lot of gradients in the UI.
Searching for bots and yes there are a lot of them!
Emojis of course!
GIFs
Image access for camera roll and photos.
Location on your conversations is possible if you want to share that information.
There are add-ins for Skype to help you access other information to then share on Skype in return.
Call and conversation history plus an easy way to find a contact to place a call.