There has only been 5 commits since the last release and even that release was running a fair amount of older software.

• Kernel: 4.14 (2017 LTS but sad that it is still being used [WIP] Bump up kernel to 4.19.37 #2750 feature: Ask upgrade the kernel to 4.19 or provide a option to use it #2728 Update linux kernel to fix cpu quota #2972 )
• SSH: 7.9 (2018)
• Docker: 19.03.5 (this is reasonable updated but there are several point releases since then that aren't available despite every previous version being available)

There are several major issues that don't appear to being addressed.

• UEFI boot UEFI Support in ROS #2251
• IPv6 ipv6 under rancherOS #2593
• RaspberryPi 4 support Cannot boot RancherOS on Raspberry Pi 4 #2875

There have been lots of commits to k3os so it appears that is where Rancher is putting its efforts now. If that is the case it would be nice to know and know if there is a migration plan?