The next big update was original called "Vex" and maybe we get a new raid. Why I'am thinking so: In the book of sorrow are some words about, how the vex come to this world. [spoiler]Crota used his Sword and made a hole beyond room and time and the vex coming through this hole. The vex simulate a kind of Oryx or crota to understand and beat them but they don't understand their darkness. [/spoiler] But know their iron, the vex will come back.