Wow (!) - itīs been almost one year since the last post...
Anyway: I spoke to my friend in LH Cargo some time ago, and he said the MD-11Fs (I suppose he meant the initial batch of fourteen) will stay until around 2013, due to contractual commitments (tax relieve from California or US?).
They are looking at B777Fs nevertheless.
Regards,
J.V.