Hmm, I'm not convinced by this. Not in the sense that I don't want it in Comanche, but in the use of the term 'dub'.
Normally, when the term 'dub' is used, it denotes a translation from the original language into a foreign language audio track.
Presumably, since they speak in English in the trailer, this means that Prey was recorded in English and will have Comanche dubbed over it. This seems kinda backwards to me. I'd prefer if the whole film was in Comanche with subtitles, or just in recorded English. To have it recorded in English, dubbed in Comanche, and then subbed in English seems bass-ackwards to me.
Then again, they might have recorded in both Comanche and English and I might be completely wrong.