Awful logo. Looks like some sort of button
It would make sense for them to move to a minimalistic 2D logo, given 3D logos - like the current Xbox logo - are all a bit 90s. That said, not sure I understand why the bottom right part of the X is detached.
Most likely fake though - strange that this was put on this random Twitter account on the 16th March. How did the OP find it?