Finally, Skype for Windows Phone is available in the Marketplace. It helps you connect with friends and family instantly with free voice and video calls everywhere you go. The beta was available in February, but we’re happy to report the release of the final version with some new features.

If you’ve been using the beta version, here are the new features in the final version:

• Portrait mode video calling
• Support in 18 languages
• Add new contacts (Skype and phone contacts)
• Support for participating on audio conference calls
• Call-in-progress notification
• Ability to mark all messages as read
• Block/unblock/view blocked contacts

For the complete changelog, check out Skype Garage. According to their blog, Skype has tested and certified the following Nokia Windows Phone devices:

• Nokia Lumia 710
• Nokia Lumia 800
• Nokia Lumia 900