That’s not what I’m reading.
Instead of the five states a candidate had to win in 2012, a candidate had to win at least eight in 2016. And adding to that, a candidate could no longer skirt by with just plurality control of the the delegation. The rules adopted in Tampa for 2016 upped that to a majority. The raising of the number of states is not really of much consequence. But bumping that control threshold up from just one more delegate than your next nearest competitor to having to control half of the delegates in a state’s delegation plus one is a potentially significant change.
http://frontloading.blogspot.com/2015/12/the-real-import-of-rule-40-in-2016.html?m=1
We’ll find out at the Convention; perhaps.