Have you tried a soft reset (2-scroll wheel reboot)?I received the update last night but the installation failed. It said to wait for a new download. Currently 2021.44.30.21
I am seeing more drivers going from 10.10.2 to 10.11.1. This is encouraging to those who were passed up from the last 10.11 upgrade.
The additional pattern I am seeing is that 10.11.1 is rolling out to cars that have older than 2021 or have had at least 5+ prior beta updates. In that case, this may follow the mass release pattern where the rest of the drivers may get this update within the next 24-72 hours (crossing fingers).