Well, duh. Lionsgate made it official today: Their newest YA franchise Divergent will not be a trilogy like the books it was based upon, but instead four movies, with Allegiant being split into two following in the long tradition of two-part conclusions to Harry Potter, Twilight and The Hunger Games.
Out of all those, I'm pretty sure Harry Potter and the Deathly Hallows, at nearly 800 pages, necessitated a two-part adaptation, so let's not even pretend this is about anything more than pure cash at this point. Who can blame them, though, when fans will turn out to watch all four installments?
I guess this trend still isn't as bad as a three-part Hobbit adaptation.