Cant see it, too many people like to have a physical copy in their collection, everyone knows computers can break, why risk a collection which likely cost hundreds if not thousands cubits on a drive which could be broken general failure/corruption, power surges, physical theft etc.Physical formats like Blu-Ray could be niche markets but far too expensive compared to using a media extender with far more uses to stream or download for much cheaper and more convenient.
Blu-Ray will take off once the cost of players come down more, then when more people are buying the cost of the discs will come down exactly the same as what happened with DVD.
As for this movie it will depend on if I have bought a PS3 by then, Im on a final year of a degree and get far too distracted as it is so waiting untill May to buy one (be even cheaper by then too), so I may go Blu-Ray