Skype have updated their iOS version of the Skype client and added two way HD calling for the iPad Air and iPad Mini (retina). In the update is the ability receive chat messages even when the app is closed which makes it way more usable for messaging. Also chat messages are synced faster across devices.
The updated app is available from the iTunes Store.
What’s New in Version 4.17
Two-way HD video calls are now supported on the iPad Air and iPad mini with Retina display.
Receive chat messages even when Skype is closed.
Chat messages now sync much faster across all your devices.