They might very well be just in the 10.0 branch of the code for now, or perhaps in the 10.1 branch but just not in what has been released in beta 1.Why is it unrealistic to see a 10.0.2 release during the 10.1 betas?
It happens all the time. Just because there's a beta out, doesn't mean that they're going to hold all of the bug fixes until that version is released.
They'll most likely release a 10.0.2 update to fix urgent bugs like the no service bug, and then release 10.1 when it's really ready.
I'm kinda bummed out that they don't seem to be working on improving the performance of their brand new device. It's sad that the 6s out performs the 7 in UI smoothness and daily tasks.