In my estimate, XB1 is at ~14.1 million by end of June 2015.
I used 15.5 million for rounded the numbers because i like zero and five, but to be honest, i have ~15.4 million XB1.
Here what was my prediction
I predicted 1.3 million XB1 and 300k 360. I think is over the 1.4 million XBOX (XB1; 360) of last quarter for two reason:
1) XB1 has sold more than last quarter accourding to NPD in the US:
XB1 sales last quarter:
623,000 [ 187k / 139k / 297k]
XB1 sales this quarter:
672,000 [ 189k / 202k / 281k]
( and yes, US =/= The world, but at least we know near 60% of XB1 sales)
2) I think MS has ship some XB1 bundle for this holidays.
That's why i think XB1 shipments should be over last quarter ( ~1.1 million, but is just my estimate).
I have ~1.3 million XB1, so, not much more compared to last quarter all considering...