“NBBJ’s proposed design for the new Dalian Shide football stadium in China represents a new direction in sports architecture by moving away from the creation of a building based on pure form. The organic architecture of the building challenges the typical stadium typology to become more than an impressive skin wrapped around an ordinary seating bowl.”
More info at Arch Daily.
That “roof” would make it very hard to track the ball with the ball constantly going in and out of light and shadow. Looks awesome, but not so practical.