At launch, this beta version of Skype is free to download and use for PC users. Later in the year the company will release a Mac-friendly version. Once the kinks are all worked out -- and the company admits that there will be bugs -- Skype will also release the official updated version.
All parties involved will need to have the beta version installed to use the new feature. Otherwise, initiating a group video call takes nothing more than a click of the "Add" button to invite participates and then a click of the "Video Call" button to get video up and running.
As we previously noted, group video calling is considered a premium feature. Once the official version is released there will be fee associated with this functionality. Skype asserts that it still has no plans to charge for two-way Skype-to-Skype audio or video calls, although we do know that advertisements are under consideration.
If you're a PC user, download the latest version, give it a whirl and share your thoughts in the comments.