Assuming KI follows the current rate of change: they took 2 years to raise to 60 from 50. 4 more increases at the same 10 level incremental increase rate would mean that in 8 more years it would be 100. At 5 cap increases total, it averages to 20 levels per year per cap to max on average.
So 2019 is when we'll be 100, at the 11th anniversary mark.
Not bad, considering that it took EverQuest 12 1/2 years to increase their cap to 95 from 50, in 5 level increments. That's 9 cap increases total, for 1.4 level increase per year per cap to max on average.
LOL, j/k. Nobody could even speculate if and when they even decide to go that high in the first place. ;-)