It's official, Respawn will be doing a limited Alpha test for Titanfall. Here is a post from Abbie on Respawns official forum:
I know there is a lot of confusion over this right now. We ARE NOT running a beta at the moment. We're doing some very limited technical testing (Alpha. If you have not been invited via email and signed a very comprehensive NDA, you cannot access it. I cannot get you in. Don't be upset, most people are not going to be playing in this and the ones that are can't talk about it, stream, post video, etc. We understand the desire for a Beta and we have not ruled it out but I don't have any news on it for you currently. Thank you for your understanding!
Update 2: It might not be a scam afterall. The email that sent the the invite was from: EA@em.ea (full extension <firstname.lastname@example.org). This email has been used in the past by EA for betas.
Also, the email links to the official Titanfall site:
Talked to customer support at EA:
1st EDIT: When I first made this thread, it was believed to be a scam (see posts below on Page 1).
Here is what the email says:
This is what happens when you click the link from the email, log in to Origin and sign up:
Congratulations, you have been selected to take part in an exclusive trial for an upcoming EA title on Microsoft's Xbox One. If you are interested in participating, please click the Register button below and follow the required steps.
REGISTER NOW as availability to this trial is extremely limited.