via Vatican News:

The Pope recalled that this day marks the beginning of the Season of Creation that will last until 4 October, the feast of St. Francis of Assisi.

As he had announced on 21 August when he received a delegation of lawyers from member countries of the Council of Europe, the Pope revealed that the second part of his encyclical Laudato si’ will be published on 4 October.

“On that date, I plan on publishing an exhortation, a second Laudato si’,” the Pope said. “Let us join our Christian brothers and sisters in the commitment to care for creation as a sacred gift from the Creator.”

The Pope’s remarks on Wednesday summarized the core of his Message for the World Day, which was made public in May:

“It is necessary to stand with the victims of environmental and climate injustice, striving to end the senseless war on our common home which is a terrible world war. I urge all of you to work and pray for it to abound with life once again.”