Originally Posted by Llama_Shepherd
He's not. He's wearing the black suit for one storyline. That takes place on Krypton. Where he has no powers. But the suit gives him powers. The blue suit returns in a short while.
It doesn't really matter, the storyline is a ploy to introduce yet another suit design. That's the marketing hook. There have been plenty of Superman stories where he goes back to krypton without him having to change his suit.