I understand your disapointment. As being in my "rogue playlike" period, I was really looking forward the opportinities offered with the D/N schedule. And as a regular player of paper RPG, I was really excited about getting new dices (perhaps this 11th D20 would have be less jinxed thand the 10 previous ones...) and so again I am really disapointed.
However as said many times, Larian is a small studio with a small team with budget and managment issues that do not face the BIG studio. So I am more lenient with Larian than with other studio (let's take a recent example : Watch Dogs with its huge report, lack of news and poorest quality than advertised...)