Unfortunately, the discontinuation of publication of the Gatehouse Gazette, except as occasional special issues, has left a void in the English language Dieselpunk communities. It’s also a shame that the attempted restart of Steampunk Magazine failed after one issue since it was stretching out to include Dieselpunk.
However, to the rescue has comes Lamplight News published by the Steampunk Illumination Society. Not only does this excellent newsletter cover Steampunk material but also has a regular article each month on Dieselpunk, which I have the honor of writing.
So check it out.