Yes, new version leaked, 0.6 build 64!
Thanks to recent developments in PHP's lack of security I was forced to update a lot of different domains manually in a slow and painful process. This forced my hand to fix site really fast and publish new Sunflower along with new package methods, which were the reason for the upgrade.
So, enjoy. It's a version long overdue. This time significantly more stable and hopefully with fewer issues. One of the big changes is the addition of GTK4 support which should be 1:1 to GTK3 but you never know in such a large code base. To start Sunflower with GTK4 you need to specify it through environment SUNFLOWER_GTK=4 sunflower and that should do it.
Let me know if you run into issues or even better if you see some issues that are still open but no longer relevant, list needs to curating. Have fun!