LWN.net doesn't exclusively cover Linux kernel issues. From the FAQ,
What is this LWN thing?
LWN.net aims to be the premier news and information source for the free software community. We provide comprehensive coverage of development, legal, commercial, and security issues.
What is this LWN thing?
LWN.net aims to be the premier news and information source for the free software community. We provide comprehensive coverage of development, legal, commercial, and security issues.
https://lwn.net/op/FAQ.lwn