Out just a moment ago, Edit Flow v0.6.5 has one purpose: to fix an issue with the post timestamp being set when you set a post to a custom status.
Basically, if you set a post or a page to a custom post status, the publication timestamp would be set and saved. Upon publication of the piece, the publication date was set to whenever you originally saved the post with a custom post status. Our fix works around some of the limitations of WordPress core on this issue.
WordPress.org user saomay deserves our thanks for their patience in helping track down the issue, and testing the fixes. It was originally reported in the forum.
It’s worth noting that we’re actively working on v0.7. You can follow our discussion on our development blog. We’ll be looking for beta testers, translators, and documentation writers shortly. If you’d like to help out, let us know in the comments.