Francis has no idea what he is talking about.

It is reported by Rorate Caeli (with the text to prove it) that Francis is going to refer himself as the “Bishop dressed in white” of the famous “third secret” of Fatima. 
The mind boggles. And, actually, laughs a bit, too.
In my eyes one of the following is happening: 
1. The Blessed Virgin appeared to Francis and told him he is the Bishop dressed in White. 
No, really. Just kidding… 
2. Francis has no idea what he is talking about. 
This is the most probable. It's also very, very frequent. 
3. Francis wants to style himself as a sort of martyr in waiting. 
This is, however, too stupid even for him. 
I'll go for 2. then.