They could be right : radar could be operational in summer 2011... End of summer is scheduled 21th of September this year.
But an operational radar (the screen with all the colors on it) doesn't mean you can control with it in real life with a real environment. I reckon "London-London" APP should be careful before validating LOAs with the new radar APP.
Environment in the vicinity seems to be complicated enough to avoid increasing complexity just because someone up-there in the hierarchy decided it had to be done the day before tomorrow.
