As reported before, Nintendo has just confirmed the next Direct for June 18th, 7AM Pacific Time. The Direct will not have any hardware mentioned and Nintendo makes it clear that the Switch successor will not be present during the presentation either.
The Direct that will take place tomorrow will be roughly 40 minutes in length and will focus on the games that are to come on the Nintendo Switch for the remainder of the year. It was interesting to see that Nintendo talks about the consoles successor in the same tweet, so we will have to wait and see what they are cooking at other shows later this year.
Personally, I would like to hear more about the console at this point than titles coming to the current console.