Planet Rugby and their bunch of copy and paste "journalists". I have a good idea where they've copied that article from.
http://www.planet-rugby.co.za/story/0,25883,16017_7840947,00.html
http://www.rugbyrama.fr/rugby/top-14/teamtransfert.shtml
If you look at the lists of players, they are exactly the same as the article on Rugbyrama, the only thing Planet Rugby has done is translated some of the French words (e.g. retraite) in the text.
As for the news on Carizza there is nothing that we haven't heard already. It almost certainly won't happen now Tomás Vallejos has signed, they have Earle, Vallejos, Timani and also Lewis Rawlins who has signed from Cross Keys. If the Scarlets do sign another lock, I can't imagine it will be an international as that would mean four non Welsh qualified players (although Earle is a project player) in one position.