VA has become the next airline to go for onboard streaming as their primary form of domestic IFE. The system is the same one that AA is installing, and that QF is supposedly trialing at the moment, sourced from Lufthansa Systems.
The roll-out will commence in 'mid-2012', with no completion date mentioned. The system will be fitted on all B737-800's and remaining E-190's, no word on the A330s at this stage, but I imagine that they will probably also be fitted with the system.
See the Virgin Australia blog for details.