It was Jossed, or rather, Jo'd, once and for all with HP and the DH. And I get to gloat a bit.
In case it wasn't made clear before in canon...
DRACO MALFOY WAS NEVER AN ABUSED CHILD. Lucius and Narcissa are not the nicest people in the world, but it is clear they adore their son. All they did during the last battle was run around screaming for him. And Voldemort knows the Malfoys' weak spot - threaten their son and they fold like origami paper - Draco's not their punching bag, he's their precious baby boy.
Lucius might be a bit strict and demanding, but abusive? Ha. I'd say that Dinky Drakiedums is spoilt rotten. He's not beaten, he's not locked in a closet, he's not Crucio'd, he's not used as a sex toy at Death Eater orgies. For all we know, Lucius and Draco enjoy regular father-and-son fishing trips.
Fare thee well, Abused!Woobie!Draco, the concept that launched a thousand Gary Stus.