Based on what I've seen/heard in the trailer, I'm taking a stab in the dark as to which new Vortex guns are which.
It makes sense for the Stampede like gun to be the Nitron. The pre-release pricing info made this the priciest at 70 euros, which is the equivalent of about $95.
Also, it looks like someone is holding the front grip on the box, which also identifys as the Nitron.
Secondly, this gun is the Praxus or Praxis. A gun on the price list was called the Practice, and was priced at 40 euros, or $55 dollars. This gun features a sweet shotgun action.
Based on these, this gun can be nothing other the the Vigilon, priced at 25 euros, or about $35 dollars.
And this little gun that resembles the Sharp Shot is the Proton, which was 15 euros, or $20.
No information as of yet about the Nerf Vortex Mission, but my bet is that it will be similar to the Dart Tag 2-Player Starter Pack, which came with 2 sharp shots and two vests.