This is interesting, I totally slept on Synthogy, didn't know they had something cooking. How come I haven't seen/heard any rumours that Synthogy was about to release a new library? I follow the forums, both here and on PW, pretty well.
Ivory 3 German D could be great, just listened to the SoundCloud demo of the Chopin Ballade 52, not bad at all. For comparison loaded the MIDI file from the Minnesota Piano E-Competition for the same piece, into Pianoteq with the Hamburg Steinway Model D preset.
Can't say I liked the Ivory 3 German D more, different from the Pianoteq HB Steinway, but not necessarily better. Listened with a speaker system that is more geared towards TV use, movies and such. Have yet to listen in headphones, and that may change my opinion.