Robert Downey Jr. is a major Marvel tease.
The actor tweeted a new poster for the upcoming Avengers: Age of Ultron film on Wednesday, teasing a "big announcement" coming out March 5.
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Avengers: Age of Ultron hits theaters May 1.
You've been good so here's a new #IronMan poster from @Avengers. & on the DL, big announcement in 8 days… #getexcited pic.twitter.com/AdB1tTib7K
— Robert Downey Jr (@RobertDowneyJr) February 25, 2015
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