Titanfall devs, Respawn Entertainment aren't quite sure whether there will be a Titanfall Beta or not yet, but they are certainly considering it at this point in time. Vince Zampella, co founder at Respawn confirmed that they are "definitely thinking about it" when asked about a possible Titanfall beta, however at this point in time it's unclear what kind of access would be available for such a thing.
If a Beta does come about, it could be possible that it could be restricted to pre-orderers only, or it may end up being even stricter, but right now it's hard to speculate.
I think that it would be best for Respawn Entertainment to release a Titanfall Beta because with the massive scale of most FPS games these days, it's rare that a FPS console game ever releases without bugs, exploits and issues on day one. A beta would help Titanfall to iron out gameplay kinks and focus on server stability.
Vince Zampella also commented on Kinect integration by saying that it just "didn't fit the game," meaning that there won't be any added Kinect functionality to Titanfall, leaving players with just their trusty controller in their hand.
Personally I cannot wait for Titanfall to release, and a Beta would definitely be a good way to give us a little sneak peak at what's to come in the full release.
We'll keep you updated on any new information that comes out about the beta.