There is no date for a final release.

Thanks lowlander for your fast reply!
And also for giving me a rough estimate

I'm not really up to date with MM5, is there some sort of a planned realease date?

Edit: I know MM5 is available for beta testing but I'm so happy with MM4 that I don't know when I'm gonna jump

It may not get fixed anymore, but added as: https://www.ventismedia.com/mantis/view.php?id=16917

I realized there is a minor bug in the current MMW version (4.1.29.1910) used on Win7.

Always on the first attempt when adding files a from network folder to the now-playing playlist (drag and drop) the files are greyed out and the metadata is missing (artist, album, ...).
Playing one of the added songs removes the greyed-out-colouring but metadata is still missing.
From now on, every further addition of files shows correct metadata. Even adding the same files again brings back the tags.

If Mediamonkey is closed/exited and reopened everything works as intended and the correct metadata of previously greyed-out tracks is loaded.
All works until pc is rebooted.
Behaviour is 100% reproducible.
The network folder isn't mounted if that's relevant.
I know it's not a major bug und just a little bit annoying, a fix would be greatly appreciated though.