Cheers, guess we will just have to wait for an official announcement.
Those 18 August/11 September dates are confirmed at https://www.manutd.com/en/news/deta...s-the-lowdown-on-womens-professional-football
What I can't find is anything saying when the actual fixture list we'll be released. I think it's because there are still a couple of appeals underway from teams who couldn't join the Championship. Sheffield Ladies have dropped out, so it may be that at least one of them will get in.