Dandonfuga release art like that you see in this thread. Nominally I think that art is to be produced between the first and last day of the month and delivered early in the following month once Patreon has finished collecting payments. In practice, her schedule has become shifted so that instead of producing the May content between May 1st and May 31 she will produce it between May 11th and June 11th, roughly, since she didn't finish the April content until May 10th. For some reason, even when she has produced only one batch in a month she hasn't reset her schedule; this may be because lately it seems like she's struggling to fulfill her obligations. Hopefully things will improve, but I'd generally expect new batches in the second week of the month rather than the first. The reality is that is isn't clear when they'll arrive because it isn't clear when Dandonfuga will finish.