Nintendo Direct E3 2019 runtime is expected to be around 45 minutes.— PeekyBird! (@thepeekybird) June 4, 2019
Take this information with a grain of salt: Nintendo's E3 2019 presentation is rumored to be about 45 minutes in length. Although Nintendo has had E3 presentations at this length in the past, please keep in mind that this information is not necessarily confirmed until Nintendo themselves makes a statement on it. Either way, here's hoping that Nintendo has a ton of news to announce regardless of their presentation runtime!