Sony announced that they have just released their official PS3 firmware version 2.30 on April 15th

Changes for 2.30:

The Blu-ray Disc playback now supports DTS-HD Master Audio and DTS-HD High Resolution Audio output.
However, The PS3 system does not support playback of DTS-ES and DTS 96/24 for DVD-Video or DTS-ES Matrix for Blu-ray Discs.