Has anyone estimated how many have sold in 2015 based on this number?
If 18 million sales to consumers now - not too shabby.
But what is the growth since this time last year?
Estimates of 12-13 million were being thrown around Neogaf, based on MS posting '10 million iminently shipped' at the start of november 2014., but it turned out that they mos tlikely were referring to orders and possible channel stuffing right up until the end of the year.
So either MS sold ~8 million during 2015, or it sold 5 million.
At the start of 2014, MS announced sales of 2.1 million -
http://wccftech.com/microsoft-sold-two-million-xbox-one/
So 10m - 2.1 = 7.9m
So did MS really only grow Xbox 1 sales by .1m in 2015, despite Halo being launched?
The other thing to consider is, how well did the Xbox One sell outside of the holiday season.
We know the sales for October, november, and are december are yet to be revealed.
In the US at least, sales during those first two months are about 1.5m, and december is likely to be around another million at the least. So around 2.5 million in the last quarter for the US alone.
It's a lot harder outside the US to estimate sales, but we do know the Bone sold at most half of 300k
http://www.neogaf.com/forum/showthread.php?t=1149321
I think it's easily safe to asume another million to 1.5 million sold worldwide during those last three months of 2015, bringing it to around 4m
That leaves 4 million sold during the rest of 2015 - or around .440k a month woldwide.
Elsewhere, at the same time, Sony announced 18.5 million sold at the end of 2014s buying season:
http://67.227.255.239/forum/showthread.php?t=965548
Now we know it's 35.9m
So they sold in the order of 17.4m in 12 months, almost doubling the user base.
During 2014, the started at 3.1 million, and rose to 18.5m
18.5 - 3.1 = 15.4
So in 2015 they grew their sales.
If the trend continues for both, then the Xbox One will probably be around 26m by jan 2017, and the PS4 around 54m.