B190 here...
Still on the April security patch as a US user.
I have no other information to offer.
Picked up my Mate 9 last week as well in the US. Mine is on the same 190 / April 2017 patch.
This phone has impressed me in almost every way. I was really looking for a device with a little smaller footprint, but everything else about the Mate 9 was so good I have been willing to overlook the size.
Reading the articles and reviews from AC and other tech sites that consistently praised the Mate 9 even months after its release made it an even easier decision to pick one up.
$400 new on sale at Best Buy made it a must have.