The Vatican published today the Homiletic Directory which has been in preparation as a follow up to Pope Francis' Apostolic Exhortation Evangelii Gaudium.
PDF of the entire document.
In book form available from the Vatican in Italian or English here.
N.B. The most novel part of this new Directory is the final part of the document which has a list of all the Sundays and Solemnities with suggested doctrinal and moral topics and the corresponding references in the Catechism of the Catholic Church, encouraging anew catechetical sermons!
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Plinthos' Lifetime Preaching Plan