My devices are all on ios11.1 now, which I beleieve is NOT beta anymore. However, I'm using XCode 9 beta so that I can work with these devices.
Sending an app up for Testflight to the general beta group requires a little review, but when I submit it, it says:
Invalid sdk value. The value provided for the sdk portion of LC_VERSION_MIN_IPHONEOS in appname.app/app is 11.1 which is greater than the maximum allowed value of 11.0.
Now, I can easily roll back that SDK value to 11.0 (I think), but the point is: if devices are legitimately on 11.1, shouldn't all our dev facilities unashamedly support it?