That's changed now, got upgraded from a standard balcony to a deluxe balcony on Azura in the canaries in February this year, still the same in that it was still an upgrade from a balcony to a higher grade balcony cabin but the balcony was one of the really big ones with a lot more space than a standard balcony.
Guess any free upgrades are unlikely to happen now they've introduced pay for an upgrade though.