Marvel has launched a surprise announcement on its social media channels and fans are going wild trying to work out exactly what is happening. It started initially as just a chair with "Chris Hemsworth" written on it, but after 15 minutes expanded to another chair showing "Vanessa Kirby".

Is that you, Bob? Lewis Pullman, who will appear in Thunderbolts as, well, Bob is the latest addition to the growing list. Which at this point is assumed to be the official Avengers: Doomsday cast list, but might also just be Kevin Feige's Christmas card list.