What does Pope Francis say in his new apostolic letter on the liturgy?

A Pillar Explainer

Pope Francis elevates the Host at a Mass on Feb. 23, 2014. © Mazur/catholicnews.org.uk.

Pope Francis released a new apostolic letter on the liturgy on Wednesday. The letter, Desiderio desideravi, addresses “the liturgical formation of the People of God.”

So what does it say? What’s the context? And how is it likely to be received? The Pillar explains:

What…