Not likely. The only reason they made DD/DTS encoders back on the day was because DD-capable receivers (and DVD players as well) were expensive. Making receivers capable of being upgraded to 5.1 via an outboard processor allowed people to get into surround sound now, and upgrade to DD later as their budget allowed. None of this was ever an issue with DPL II, especially since you can get receiver that has it for less than $300.
Regards,
Wayne