With Skype 5.2, which isn’t yet live on the App Store, Microsoft has re-introduced voice-message support having removed the feature with the 5.0 launch. This means that when someone sends a recorded message to you (e.g. if you’ve been offline) it will now show up in your conversation stream and you can listen to it directly. Additionally, you will now be able to view a user’s profile from your contacts, letting you see at a glance their status, username, location and more.
Lastly, with the latest rollout you’ll be able to add participants to existing conversations through the main menu on the bottom right-hand side of the conversation.
Version 5.2 should be going live on the App Store shortly.