I'd guess we'd hear more mid/late July. Like the 20/21st or 27/28th maybe?
I believe the last trailer was only 3 weeks ago? I would count on at least having 1 month's time between trailers right now until it gets much closer to November when it is planned to launch.
Im hoping we get a few more tid bits but for the most part I'm hoping we don't. I feel like quite a bit of previous games was spoiled prior to release so I'm going out of my way to avoid it all
I've seen everything that was posted on the official Pokémon site, and that's about as much as I want to know before I play it! Usually I avoid any news at all because I like to go in blind. Can't wait though!