Zachery Keisler
Pokémon Master
Since World Hobby Fair has not revealed anything, it is safe to assume we won't get any new info until second or third week of July, and nothing until August after that.
Hopefully we will get most of the early route fodder in July, and don't end up with another Bunnelby situation in August(Bunnelby was revealed in August 2013 alongside Megas, you see).
I have a hypothesis to test. Today at the World Hobby Fair they manly showed all the information we have now about Pokémon Sword and Shield, but on the main Pokémon site in Japan they say new information about Sword and Shield would be given at the World Hobby Fair. I think they used today to recap what has been given already so tomorrow they can give the new information to end the event with a bang. This is just a hypothesis but it would be the best way for them to give us big information about the games to get the fans excited.