Here is the official word from De'vo:
''Who'd be interested in me releasing an April Fools deck for fun, on 1 April. With all the too serious decks out there, I feel like we all need something to lighten the spirits. Limited to 2000 each - will never make again. I won't show the cards themselves - will have to be a surprise when you get them -. Who's interested in something like this?''
I really like this idea of a mystery deck. I really like the idea, and will hopefully be able to buy some.