Well, XB2 won't be out until december this year and Eł is already in May. They might as well fully reveal the Revo in August (Revelation of Spaceworld?).
But I still hope they will reveal what the technology is... although...

without games, it might be a very poor demonstration.
1 thing I don't understand, can't they come up with some good tech demos / play demos before Eł? It's 2 months away!!!!