UBP-X700 does not support Dolby TrueHD (Atmos) format packaged in MKV files. Right now the only way to play Atmos files is by using M2ST containers, but M2ST is not as common for online content as MKV. For example all the Atmos demos downloadable from the Dolby homepage, are in MKV format.

Does anyone know if there are chances that Sony in the future will be able to provide a firmware update to fix this issue? After all Sony claims MKV and Dolby TrueHD support for this product. Has anyone experienced this problem?