Last year I believe Pope Francis moved the traditional Thursday procession to Sunday because it would cause less problems for Rome (traffic, etc). This year he moved the celebration from Rome to Ostia. I don’t think there’s anything ‘going on’ and I’m not criticizing the Holy Father, questioning his decisions, or anything, or trying to be an armchair, “And what does this change mean for This Pope, This Papacy, The Church Today, The Church in Future, The Woman/Man in The Pew, etc”. I personally think the celebration is beautiful, I hope everyone who saw it prayed and was graced by God, and I hope that the Holy Father found great comfort and grace in celebrating it.