Prometheus

[Riskae]

Commercial looks cool but I am still failing to see how the allusion to Prometheus is relevant.

Prometheus is not just supposed to be the bringer of fire to mortal men but also seen as the Harbinger of a new era or age. Normally it means something just new or revolutionary.
It could also reference the idea of finding new technology, or having a modern day Prometheus gifting this new technology.

Personally I love the title and can't wait to see this movie.

Well from what I saw of the commercial I suppose the aliens could be related to Prometheus in that they left messages to the humans, however Prometheus is representative of bringing a new era in that he brought about the era of men, seeing as this is about an alien race bent on destroying said men, I don't believe that Prometheus is a fitting title in that sense, but I will certainly try to find the relevance of said title in the movie when or if I do end up watching it.
Like I said though, movie looks cool, I will definitely think about going to see it, but I still don't like the title.