Asriel on 29 May 2018
The Oha Suta website has changed the description of the episode. It now states "full of Pokemon information". I suspect this isn't a game reveal, but is something related to a film or new anime series.
I still think - given the hints on Twitter etc - that this Kanto reboot/reimagining/remake is likely happening.
EDIT: Entirely possible that the change in description has happened because this news wasn't meant to be public just yet. Equally possible that the announcement is not a Pokemon Switch reveal. I guess Nintendo could do a Direct at the same time (11pm UK time, 3pm Pacific, 6pm Eastern).
