Ruby 2.4 - another dev release?

Hi,

Anyone happens to know when another ruby 2.4 dev release happens? Or
whether the next release will be official 2.4?

I asked because I have had a few small issues but I also want to test
stuff on 2.4 as soon as possible, since there already was one 2.4 dev
release some weeks or so ago.

According to Heroku’s blog it will be released in December: