Nintendo has announced that there will a Direct broadcast tomorrow.
The show, hosted by Nintendo President Satoru Iwata and Nintendo of Europe President Satoru Shibata, will focus on Wii U and 3DS before the end of the year, although there will be a little look forward to 2015. My money would be for Smash Bros. Wii U and Pokémon to feature heavily.
The broadcast will stream at 10pm on the Nintendo Direct website.