With the unveiling of Cannes Film Festival’s Official Selection now exactly three weeks away buzz over the titles that Thierry Fremaux and his team will select for the 68th edition is hitting fever pitch.Official teaser announcements have started to roll this week, led by the confirmation on Wednesday that George Miller’s Mad Max: Fury Road would premiere in an Out of Competition screening on May 14.Earlier the week, Cannes unveiled its poster featuring Ingrid Bergman to mark the centenary of the late big screen’s birth and it was announced that Stig Bjorkman’s documentary Ingrid Bergman – In Her Own Words would show in Cannes Classics as part of the commemorations.For the rest of the Official Selection, except perhaps the opening film which is traditionally revealed in advance, Cannes watchers will have to wait for the announcement press conference in Paris on April 16.In the meantime, Screen’s staff and network of correspondents have been trawling through wish and prediction lists and putting out feelers to compile the definitive pre-Cannes list.It is not an easy task because an Omertà-like wall of silence comes down in the industry in the weeks immediately before the Official Selection announcement.Tales (unsubstantiated) abound of invitations being withdrawn following a leaked confirmation ahead of the official announcement.“Part of the Cannes game…