As Nintendo’s financial results briefing drew to a close, President Tatsumi Kimishima lightly touched on the subject for their plans for E3 2017. He stated that Nintendo “Will not be hosting a large-scale press conference for institutional investors, analysts and the media.” And that “Nintendo of America will present further information on our plans at a later date.”
This doesn’t come as too much of a surprise since Nintendo have not hosted a Press Conference at E3 for several years, the last time being in 2012. We may see some video presentations but most likely we will have the Treehouse Live event to cover news and events at E3.
Source: Nintendo Japan FR Briefing For Fiscal Year Ending March 2017 (Page 19)