Coming from America

After episode 1 there have been 3 families introduced. Will the 4th family show soon? Will another episode be released? Inquiring minds want to know. Especially since this was already released in Canada. Enjoying it so far but wanting more. Hoping the 4th family goes to a different city and or country. Also, why is it originating in the UK when it's about American Families. I also did not know, prior to seeing this that so many American families are making the decision to move to Africa. I am glad they are chasing after their ancestral roots. It will be interesting to see if they decide to stay or return to the USA.