We don't think anyone is the least bit surprised at this news, yes, Flappy Bird is coming back according to developer Doug Nguyen in the below tweet that was sent earlier today.
@painfullpacman Yes. But not soon.
— Dong Nguyen (@dongatory) March 19, 2014
Many people may be done with the hype of the game now, but like we've said before this clearly looks like some clever marketing to get even more people interested in the game rather than a actual worry of what the game could be doing to people, which Nguyen was apparently worried about. Who knows when it will actually appear but we wouldn't expect it to be too long away.