People been asking about Black Panther since at least 2010. I never said it wasn't saying they announced it just out the blue (even though that still could of been the case... we had easter eggs a plenty with Marvel for things that aren't going to happen... HELL we saw HOWARD THE DUCK and we know that's not going to be remade... I hope)
More often than not the Marvel easter eggs have led to concrete information though.
Hell, there was a Project Pegasus/42 easter egg in "The Avengers" 2 years ago, which is a direct reference to "Civil War", but people were trying to say "Civil War" was announced because of "Batman V Superman".
Fred.