In the past, Windows Phone add-ons, tweaks and security fixes went through separate optimization and approval phases at mobile operators, just like Verizon et al. retain a say in when major and minor Android updates roll out.
But as far as we can tell, the unlocked Lumia 950, 950 XL and 550, plus the AT&T-specific 950, are getting simultaneous promotions to 10586.29. Microsoft pretty much follows in Apple’s footsteps with this move, though it’s perhaps too early to jump to conclusions.
