Microsoft is ending OEM sales of win7, meaning they won't sell a copy of the OEM license, on 10/31/2016.
Chris might chuckle that the similar last day for OEM sales for win8 from Microsoft is 6/30/2016.
In other notes, the rate of win10 adoption has slowed slightly for October. It makes sense now that the original rush of gullible enthusiastic users is over.