First, Andrea Tornielli, on the September 2 edition of Il Giornale; now, Sandro Magister. The most interesting report, though, is that of a local Genoese news site, Primocanale, which details several changes in the local Curia, related to the probable departure of Don Guido Marini for Rome - and which would seem to indicate that the Papal move is imminent.
UPDATE (2245 GMT): It seems to be all but certain, as even Zenit (German edition) reports this imminent move (tip: Berolinensis).