Any development on optical based formats is a waste of time , and so for that matter is compression. Already 4 terrabyte capable memory cards are being developed. The future is Audio with no moving parts , like storing whatever format in uncompressed form with the program to play it and then pluging it into cheap readers. Portable , flashable with scads of music from booths in the main road (assuming some protection system) and REAL cheap players and no optical->electrical conversion. Granted , perhaps not soon , but I am pretty sure within 3-5 years the first units might be launched , Just wait till when very large storage memory becomes affordable and internet bandwith increases. Obviously legacy products will still be around , like the zillions of CDS etc.

Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.