why has there been no publicity at all in any of the usual quarters for this momentous event?

??? It's been all over the radio, wildly reviewed in all the obvious newspapers (Guardian etc), talked about here, on other message boards, all over Facebook - one of the most enthusiastically promoted proper folk albums of recent times. The chaps who started the label specially for it have done a really good job. Oh no, don't tell me they forgot to send a press release to What Cavedweller? ;-)