"This is starting over from scratch," said Joe Russo at a SXSW London talk on Tuesday. "We want to make sure everybody feels like this isn't leaning on anything from the past."

Marvel fans were expecting a major update on Avengers: Doomsday this week, but a recent promotional event left many feeling frustrated instead. After a tease from directors Anthony Russo and Joe Russo sparked speculation about a possible trailer release,

Lewis Pullman Talks 'Remarkably Bright Creatures', An Epic Encounter With Zach Galifianakis & "Unexpected" Elements Of 'Avengers: Doomsday'

With almost half a year to go until its release, the Russo Brothers tried their best not to say too much about “Avengers: Doomsday” during a packed-out talk at SXSW London, but ended up discussing the hotly-anticipated Marvel title - not out until December - rather a lot.

Doom's day?

Well, the "surprise" that the Russo Brothers promised fans has been and gone, and fans hoping for the first Avengers: Doomsday trailer are positively fuming about how it all played out.

Avengers: Doomsday may not make fans wait until December 18 after all. Several key international markets are reportedly set to screen the film days before its U.S. debut. Avengers: Doomsday could