Orbs has been added to Steam Store. You can visit the store here:
Store.steampowered.com
If you are a mac or linux user, you have the chance to be a tester! Please get in contact with us, you will receive a Steam key. You can play the game before anyone else through Steam.
Will it be free and if not, what about the people that already have a key?
People with keys can play the game without any change. Steam will be an additional option to purchase and play the game. Game Keys can not be transfered to steam accounts.
Ok, thanks. So I guess the Steam integration with achievements and whatnot can only work with the Steam version of the game.?
yes, that's correct.