The information will be released at 6 AM PST / 9 AM EST / 2 PM UK on that day, according to a tweet from The Pokemon Company.
Unfortunately, there are no details at this time about what may be announced. Recent Pokemon Sun/Moon events confirmed things like the game's starting Pokemon and release date, as well as its Legendaries and main character names.
Pokemon Sun/Moon is due to launch on November 18 in the US and November 23 in the UK. At E3 2016, we learned about a new free-for-all battle mode and also got a peek at some awesome-looking 3DS models, one of which features Sun/Moon's Legendaries on it.
You can get a closer look at Sun/Moon's new battle mode in GameSpot's E3 stage show video above.
from GameSpot http://www.gamespot.com/articles/pokemon-sunmoon-heres-when-next-info-will-be-revea/1100-6441215/