Valve will be sending out beta keys to select ****** participants over the coming months, meaning 'if you don't fill it out, you won't be in with a chance of getting a key.' The ****** is hosted on Steam, so you'll have to have it installed on your machine to fill it out.
So , if you want to have a chance to get a key , u must fill this S,u,r,v,e,y :
https://www.computerandvideogames.com...ive-beta-keys/
(The link must open steam , if you dont have steam installed its not gonna work.)