If you click the subtitles settings button, you'll see there's a tab for that. You can also dynamically change your subs selection, in case you're unhappy with the subs fleex auto-selected for you.
Just click the 'MY ACCOUNT' link and create an account. Don't tick the 'no newsletter' box to make sure you'll get the news when the player is out. We'll probably post something here as well when it gets out anyway.