I've just published my first blog post which is not just a release announcement: https://www.vendure.io/blog/2019/09/vendure-tooling-overview-of-a-modern-developer-toolchain/
I guess it could be considered "content marketing". Right now my target audience is developers so I've written a very developer-focused piece.
Personally I can't stand the typical low-effort listicle-type content marketing piece ("7 awesome jQuery plugins you need" etc), so I wrote something that I would write anyway for my personal blog, but put it on the Vendure blog instead.
I'm quite happy with this since it scratches my itch for technical writing whilst also (hopefully) getting people curious about the project itself.