While it isn't official, it looks like a couple new milestones for the PlayStation 4.
According to VGChartz , Sony's new console has topped 15 million units worldwide, with 5 million sold here in the US.
Furthermore, the system has produced over 50 million game sales at retail; the total has hit 57,151,113 titles sold thus far. These are pretty impressive numbers considering the PS4 is just barely one year old, and we really haven't seen a lot of top-tier exclusives just yet. It'll be interesting to see how the console fares during the holiday season, and what 2015 has in store.
We'll also have to wait for the official stats from Sony; any other numbers must be taken with a grain of salt until we have confirmation.