It's possible that this is a sign the company is considering moving away from E3 to put more into its own branded fan events in the future. (techradar.com)
Benedict Cumberbatch attends the Marvel Studios Avengers: Infinity War Red Carpet Fan Event at Marina Bay Sands Event Plaza on April 16, 2018 in Singapore. (benedict-cumberbatch.net)
On April 8th Sebastian attended the UK Fan Event for Avengers: Infinity War with his fellow cast mates. (sebastian-stan.com)