Here's what CL posted in regards to the disc for the mediabook they're also doing, which I assume will be the same for this steelbook.
The Blu-Ray (in all edition same) is equipped with German sound in unkomprimiertem pcm stereo and a new 5.1-Mix in DTS HD Master Audio. The English sound is also available in the original stereo (PCM) and in the 7.1 Mix (DTS HD Master Audio). The sound diversity is rounded by two audio: by Director Paul M. Glaser and producer Tim zinnemann - and from exporting producer Rob Cohen. Both audio are German subtitled!