I'm not aware of one in progress, and I don't know about specific titles but I'll be happy to send this to our Blu-Ray specialist.
I have problem with title Vivaldi: The Four Seasons / Concertos for Double Orchestra (Amazon - http://www.amazon.com/Vivaldi-Concertos-Orchestra-Acoustic-Experience/dp/B001E6OT6K).
This would not play on my Samsung BD-P1600, although its firmware is up to date and it has played other DTS HD Master Audio soundtracks. This is the fault of the player's firmware.
When will be a new firmware compatibility update with this bluray title?