All you have to do is provide your email (the one linked to your Origin account) in The Sims 4 Create A Sim Demo box on the home page.
Spots in the early trial experience are limited and not everyone will be invited in. If you are selected to participate, you will receive an email invitation with full instructions at some point in the next two weeks.
Good luck everyone!
um hey anon. i switched to a new new notebook and did not plan to keep my sims 3 data, so it is lost…… ;-;
For those of you still hoping to get an invite to the TS4 CAS Demo in the next round(s?) of invites - check your privacy options in Origin. According to a post I saw on FB this afternoon, if you have opted out of receiving promotional emails from EA, this may be what is preventing you from receiving an invite.
those wanting to receive the invite, perhaps opt in for emails through origin/thesims3.com?