What is the latest Firmware and WM10 ver avail to the ATT Lumia 950 on Fast ring.

[Windows Central Question]

I'm set to the fast ring, but have not gotten many updates recently. I think the ATT 950 version was not on a list that got firmware a couple of weeks ago, then last week it was. Just wanting to know the latest and greatest for this phone. Adding what it would be NOT on the inside rings would also be helpful.