When a stat eclipses a certain threshold, it gets a stat increase when leveled up. I think for two points, you have to be 40+, and for 1 point, you have to be 31+

So basically, currently, if you have more than 2 stats on your novus, you will only receive 1 point in your highest stat (unless that 1 stat is above 40, in which case you'll get 2 points in that stat. but don't quote me on that)