For the record of events, we present the relevant portion of an article just published by the Italian news website Affari Italiani, hosted by daily Libero:
THE POPE WILL DECIDE IN MAY - Now, despite the fact that the Lefebvrians are still moving in very cautious steps and describe the message of their superior as "one step" in the dialogue with Rome, a decision by the Pope is expected regarding this response which could be taken towards mid-May, after which other meetings with the Fraternity will be possible. [Source, in Italian]
[Update - SSPX German District: "Decision in Rome towards mid-May", in German]