LWN also has coverage of language runtimes and other projects. Recent stories include one about python-dev discussion of adding a literal syntax for frozensets (https://lwn.net/SubscriberLink/881599/ae07750ec86ed3cc/), a new OpenSSH feature on restricting agent keys (https://lwn.net/Articles/880458/), Lessons from log4j (https://lwn.net/Articles/878570/), etc.

I often skip the really in-depth kernel articles, since it makes no difference to anything I do if Linux gets a new slab allocator or whatever, but still find my subscription valuable for hearing about new project releases, as well as these deep project dives.