Today Danny Sullivan posted that Matts Cutts postion has replaced with another Googler but he is hiding the same. Matts Cutts is working as head of web spam but as he went on leave approx one year ago and further asked to extend the leave so seems his position has been replaced.
Though there is not as such news that Matts Cutts left Google but most of the users think that he won’t come back and someone has joined Google already in his place but as Matts Cutts has not revealed the fact so nothing is clear.
Though there are many known faces in Google who can take this position. May be we will hear this news soon.
See what Matts Cutts replied on Twitter –