VGChartz has it hitting the milestone as of Nov 17th.
A nice accomplishment - but still trailing the PS4 by over a 2:1 margin.
A rough start didn't help to say the least - but they have made some progress in rebuilding their reputation with such features as backwards compatibility and gamepass. The studio acquisitions were a move in the right direction - but they'll need to have these studios start delivering consistent quality exclusives if they want to keep up with Sony. Next gen might be closer.