They said that won't be the entire A3 pack, that there's more. I'm guessing a normal facehugger, normal chestburster and maybe even an A3 egg? I doubt we'll get the shredded ox or dog.
I also hope the bloody Bambi burster can look up straight, that really should be a given.
Looking at their old articulation prototype photo, the neck should have good range, and the tail will be bendable. Though I will be surprised if we get the extendable tongue.
Though it wouldn't be the first time Neca has changed their articulation plan, I'm still mad that the Defiance alien didn't get the body the Blue Kenner tribute Big Chap got in the same series...