From CNA:

According to the Vatican sources, the document, which could be made public this Advent, “can be regarded as an application of the principles of the document “Dominus Iesus” to the way evangelization is transmitted and catechesis is taught within the Catholic Church.”
In “Dominus Iesus” the CDF, then under the leadership of Cardinal Joseph Ratzinger, clearly established the differences between the Catholic Church and other religions including other Christian denominations. “Dominus Iesus” states that only the Catholic Church possesses the fullness of the Christian faith. 

 
According to sources consulted by CNA, the new document on evangelization will stress the need to make the person of Jesus Christ, in his role as God incarnated to bring the full revelation of God’s plans through the Catholic Church, the corner stone and center of every program of evangelization and catechesis.
The intention of the document, according to the source, is “to bring back the centrality of Jesus to the programs aimed at transmitting the faith to future generations, since several of these programs are centered on feelings or confused ideas about the teachings of the Church on the nature of Jesus.”