Was wondering when the Steam keys will be distributed?

I, too, wonder this.

And mine, did not receive backer steam key or steam key for purchasing on here.

Same.

Sorry for the late reply. Keys should be sent out within the next week. We have some problem getting the e-mail list out of itch.io, hence the delay!

I think what made this so tricky for me to find is that the itch.io beta page in the itch.io app's download link to take me to this page was disabled as all of the itch.io beta links are now disabled.  I only made it here by accident as I tried accessing this same area via my web browser.