We hear the same news every year.
Xbox is Dying/Dead
Xbox going 3rd Party
Xbox games going to other platforms.
The industry is constantly changing, software has a plethora of new system options to release on. To XB, one plastic box release makes zero sense. The games are too good to hold them hostage to a single platform. Sony are also doing similar things with PC etc.
Game budgets are just too high, it's suicidal to only sell them in one place unless you are Nintendo.