We understand, from our own sources, that the initial release of Skype will not feature deep Windows Phone integration, and that Microsoft is planning this for "Apollo" and beyond. Microsoft's first Windows Phone Skype application will largely be seen as an interim release until Windows Phone "Apollo" is made available, expected later this year. Microsoft demonstrated the Skype application at MIX 2011, and the app is believed to look and feel very similar to what was originally shown.
There's no exact timing from Microsoft, but with Mobile World Congress in February and the promise of "soon", we can't help but feel that Skype for Windows Phone might just launch in Barcelona next month.