Microsoft Rewards

Where did the Warpspeed quizzes (From the daily challenges) go? On my dashboard, I can see some lightspeed and supersonic quizzes, but no Warpspeed quizzes. Have they replaced Warpspeed with This or That quizzes? I used to like the Warpspeed quizzes but now I can't see them anymore. (Also, I am new to this Windows Community thing, so let me know if there's a separate place to ask for questions such as these!)