From what I have gathered, listening to an Italian broadcast, the Pope "entrusted" or "consigned" the World to Our Lady this October 13, 2013; but there was no consecration. My understanding is that there is a distinct theological distinction. Interesting to note that there is nothing on any of the Vatican news agencies pertaining to the Pope's prayer at all. Nothing at all. Where is the prayer?
Catholic prayers of consecration, use that very word for particular reason: it means a total and complete giving. There is a vast difference between consecration and entrustment.
UPDATE: N.B. Hat tip to Susan Fox at "Christ's Faithful Witness Blog" for providing an updated full text of the prayer. "Consecration" was indeed used.