Having been working on Gwenview for six years, I finally came up with the decision that it was time to move on.
It has been a tough decision, but I realize I don't have enough free time to manage such a project by myself anymore. If you want to know more, have a look at the message I posted to the mailing list.
Of course, I do not want Gwenview to die, that's why I'm looking for a maintainer. If you are interested, please contact me.