For 10 Cloverfield Lane, Paramount did not reveal the connection until the first teaser was released just two months before the movie.
The reveal that God Particle is part of the Cloverfield franchise is not a complete surprise, but it is surprising for the (unofficial) reveal to occur now.
The Wrap has revealed that the upcoming film currently known as God Particle will in fact be the third movie under the Cloverfield umbrella.
That is, until at the turn of this year when the first teaser was released for 10 Cloverfield Lane.