there was a live Unthanks album out on Friday - Diversions 5 - live and unaccompanied
actually the info for this is all over the place - Discogs says it came out in Feb (so sorry if it was already mentioned on here!), last week was possibly the version with the film included, and Rough Trade over here says it's not out until April!
Looks like it was out on Friday here. First mention I've seen of it is your post. They were touring unaccompanied last year (the two sisters plus one of their string section also on vocals) so it'll be a result of that.
I like all of the B Dury album a lot but I agree the first two tracks are the best.
They're the two singles, aren't they?