http://us.battle.net/d3/en/forum/topic/10025092427When you gain a Paragon level in the new system, you will receive a Paragon point to spend.
What category that point can be spent in is determined by what Paragon level you earn.
Paragon level 1 gives you a point to spend in a Core Stat, Paragon 2 gives you a point in the Offensive category, 3 is Defensive, and 4 is Utility (Adventure). Each Paragon level past that follows the same pattern.
At present all categories other than Core Stats (Str, Int, Dex, Vit) have a cap on the number of points that can be allocated to them, which also means there is a cap to the total number of points that 3 of the 4 categories can have.
If you reach Paragon 800, you will have maxed the number of points that can be allocated to the Offensive, Defensive, and Utility categories and all future Paragon levels will grant you a point in the Core Stat category instead.