I’m waiting for the ability to use the Flanker stance for my Spartan before I order the model from sandbox, but I have no idea when they are going to add more stances. They did say on twitter that they were planning on adding more so if anyone has any more information on the topic, could you please let me know.
I don’t work for 343, but i would assume that they would come out with the updates and dlc. I did hear that all of the dlc will be out by June this year (2016). However, i haven’t heard anything to back this up.