In the midst of this week's mobile madness, Skype has announced that its finally ready to arrive on its good friend's mobile platform. Yes, Windows Phone is getting its very own Skype app -- at least, a beta version. Compatible devices include the Nokia Lumia 710, Lumia 800, HTC Titan, Radar, Samsung Focus S and Focus Flash. A spokesperson has told us that the app will be available on most devices running Windows Phone 7.5 and above. This early version will allow free audio and video calls over WiFi or 3G, alongside those any-number paid-for calls. There's a brief video overview right after the break and the beta's available to download now.