In case you were wondering if Star Wars Jedi: Fallen Order would be making an appearance at E3 2019 this year, it is… kinda. Respawn Entertainment posted over the weekend that the game would be making an appearance that week, but it will be during EA Play. The company also said it would be at E3 this year, but did not go into details as to how much you could play and in what capacity it would be shown.
— Respawn (@Respawn) May 4, 2019
Since Electronic Arts have taken more to do their own event outside E3 and focus very little on the convention itself, we're guessing you're going to have a greater chance at playing a demo of the game during EA Play than at E3. But Respawn has yet to really talk about everything they're planning to bring to the convention floor, so for all we know their setup will be nothing but demos for Star Wars Jedi: Fallen Order. We'll see if we get clarification in the weeks to come.