See https://cooperpress.com/ - things like JavaScript Weekly, Ruby Weekly, etc. We launched something similar to Coder Weekly called StatusCode - http://statuscode.org/ - at about the same time as them but it's on a temporary hiatus. You can see a recent issue at http://statuscode.org/archive/50.html though.

i subscribe to nearly all of these and can vouch for them being a welcome sight in my inbox. sure, a lot of the links are HN repeats, but some are not :)

Thanks! I should note HN is not a big source for us but due to the time lag involved with weekly publication (about 50% is e-mailed in), a lot of stuff ends up on HN more quickly.

That said, I see at least one item a week that hits HN an hour or two after us, and occasionally stuff that even hits HN months after we covered it ;-) So it's swings and roundabouts.

Really interested in your niche publishing - any blog posts or interviews about how it all got started? Would find that really fascinating. Thanks.

It only takes one reader to agree with you that something is interesting for it to end up on HN after all :-)

I wouldn't worry about that -- most of the really interesting (hacking/programming) stuff on HN isn't time sensitive. A tutorial/intro on <lang/stack/arch/design> that's great today, will be great in a year as well.