Skype has just double the number of people together on a Group Conference. The latest update of Skype now lets you call up to 50 people together on group video or audio call.
Even the notification has got an update, now every member of the group will receive a quick ping to join the group call. Even if your group is less than 25 member, then you can ring the entire group to join the call.
This feature is only available on the latest version of Skype.