Most of the current crop of HD Blu-ray players are not able to be upgraded to access the new features that are coming on stream in the near future reports the BBC.
Owners of Blu-ray DVD players may find themselves frozen out of future developments in the technology because their machines are not upgradeable.
The Blu-ray camp has recently rolled out new features for players, which include picture in picture options.
But the majority of Blu-ray players sold to date do not have the necessary hardware to offer the features.
