Blog posts serve as great marketing these days, from showing off your engineering team's technical prowess, to recruiting others who hope to participate in some really advanced problem solving.
The press also helps maintain your existence in people's minds. With Google entering the market with Android Wear, and of course Apple's entry; a couple of 'this is how cool a Pebble watch is inside' would do well to not let us forget you exist!
Yup, you see quite a few people from game dev make the transition to the embedded space when they decide that working 100hr weeks isn't their idea of fun.
Trust me when I say this: low level development is alive and well at hardware companies.