Whether this is true or more press smoke, if this is in fact being pushed within Barca, IMHO this has Tata written all over it. You've seen already the slight change towards a more direct possession style, and further, you've seen already Lionel Messi playing more like a true 9, rather than a false 9.
Tata is a guy that likes options, he is a strategist, a planner. I'm sure he has seen something from this team in the games he has coached so far, in which he believes a supersub area 9 player can be an excellent complement.
I'm also sure he is not ignorant to the way both Lionel Messi and Neymar play, and they great rapport they have in their national teams with a target man up front.