It was previously confirmed that there would be a Nintendo Direct tomorrow for North America and Europe. Now we know that Japan will get a Direct too. The Japanese Direct will cover Wii U and 3DS games that are coming out until the end of next Spring. The Japanese Nintendo Direct will be hosted by Morimoto. He hosted the Japanese Direct back in May.
The Japanese Nintendo Direct will air the same time as the North American and European ones.
Its still unknown who will host the North American Nintendo Direct.
Source: Nintendo Everything