Yay! I'd love a key, since I have TRoS on Steam already.
Newbie question: will they distribute automatically to everyone who has bought the game on here?
Viewing post in Heaven's Grave - Update #17 - Steam Release and Sale comments
Once the Steam keys are available after the 21st (I request them from Steam and it can take up to a couple of days for the keys to be released to me), then a button should appear for you on the Heaven's Grave itch page. If you are logged in to itch and have bought the game, you will be able to use the button to get your Steam key - it is not an automatic process. I hope this helps. ^_^