Microsoft today refreshed Skype for iPhone and iPod touch and Skype for iPad with the ability to send messages to your Skype contacts using Siri. Just say something along the lines “Send message to John on Skype saying what's up?” and Siri will do the right thing.
Earlier, the app integrated with iOS 10's CallKit to make VoIP Skype calls behave like traditional phone calls with Lock screen, Phone, Favorites and Contacts integration.
And earlier this week, Microsoft announced a number of other changes that will be coming to Skype for iOS in the coming weeks.