Events will be announced only when they are ready to be announced. If info isn't public or currently available, it means that it is not ready to be announced, either due to the event being in flux, or for some other reason.
If you have suggestions for how worlds should be conducted, you're free to give them; otherwise, you'll just have to be patient
Also getting community feedback on something that you personally aren't involved with, in this example it being ranked matchmaking, is crucial. If you're not gonna release any information about it in advance, it better be flawless execution or you will just get community outraged.