Don't assume anything. I have yet to be involved in any open call that responded by the given date. We don't know how many entries they received. Harper Voyager's open call got, what, 4500? If Hodderscape got even half that many, I don't think we'll be hearing back by the end of September. Christmas may be a conservative estimate.
Even the ones that go on for years (and I was in one of those) do respond eventually. Don't take a lack of response by September 30 as an automatic no. I suspect around September 29 they'll be issuing a statement telling us they got more entries than they were expecting and asking us to be patient. Unless they say, "We've picked out the ones we want. Thanks, everybody." Then it's a no.
In answer to the original question, I haven't heard anything yet.