I'm doing some experimentation and wanted to generate my own kernel for
my SOS and UOS. I cloned the kernel hosted on
https://github.com/projectacrn/acrn-kernel but noticed that it was last
updated on September 29th and its version is 4.14.69. Looking at the latest
SOS kernel provided by Clear Linux [1], it's at version 4.14.73. Are we missing
some patches/updates on https://github.com/projectacrn/acrn-kernel?

Thanks for the pointing out the issue.
Generally speaking, the acrn-kernel will be synchronized with github.com/intel-linux-lts.git
Weekly.
Now we are preparing the switch of kernel version.
So this is not updated.