Recordad que el día 26 actualizan, no podemos descartar aun que no se trate de algo gordo. Como ya he dicho tiene pinta de expansión de lore y eso enriquece mucho la saga. Podría estar relacionado con USUL de alguna manera, a saber
Edito con parte traducida:
What is Pokemon Mystery File?
Time travel, aliens, UFOs, parallel universes, ancient ruins. There are urban legends and rumors that Pokemon are involved in some way with such things. Are they really just rumors? Specialists in the field have gathered to have full discussions on these fascinating mysteries!
Who's words to believe is up to you...
Ruin Maniac Sakuji
He loves the history involved in ruins, and studies ancient ruins and cave paintings from around the world. He believes that the secrets of these ancient ruins are tied Pokemon. He is especially interested in the Unown writings.
Occult Maniac Hitomi
She has had in interest in the mysteries of the world since she was a young girl, and now researches the occult daily. She especially loves Ghost-type Pokemon. She's a huge fan of PokeStar Studios' Invaders movie series.
Occult Skeptic Prof. Oonuki
He is a researcher that forwards that occult phenomenon can be explained rationally with science. He teaches physics in college, but because his handwriting is so sloppy his students often joke that it's "harder to read than Unown glyphs."