I don't know, it doesn't say there wasn't a Pokemon shown in the trailer, just that any further detail are not known.
Originally Posted by The Great Butler
For all we know, they could be keeping it hush hush, on the Pokemon shown.
Misinterpreting my posts is not your fault, negative repping me, and getting very sensitive about my posts because you misinterpreted my posts however is your fault. Think really hard, before negative repping or making a big deal about my posts. I don't appreciate being negative repped for reasons that are a result of misinterpreting my posts.