OK since so few dare to really test the new piano here is what I would consider a serious testing.
Yes I like Mendelssohn and the playing and mix of the one piece we have heard was really nice. But when you think on Pianosound from the view of a well educated pianist, you will probably know that singing music or a handful of Chopin evergreen shorties might be beautiful but that remain imho just such a smal part of what you should be ready to give in a musical convincing way with a good piano.
Most of the Producers of Piano-Sample-libraries seem imho lack the expierience of what pianoliterature affords to sound convincingly. If they are good guys they at least try to give a nice color-palette for the piano-dynamics resulting often enough in kind of "emotional" or "Pop" piano libries trying to make you dream with just playing one or two notes in the hope that none of their customers would ever have practiced enough to play notably more.- Fine but thats such a little part of what a piano should be able to!!!
Very seldom the large and orchestral part of the pianosound seem to me considered and balanced enough. And yes even if I like the Project of VSL and their high quality standards I am and will ever stay uncompromising when it comes to pianosound. I confess am not that easy satisfied, neither with what an average conventional piano is able to nor with what many Samplelibraries currently do when it comes to pianos. Nevertheless there are in some libraries some things not that bad or even inspiring.
But I know what I will do here is not very complimentary but simply honest It shows what I get when I work a bit with the new CFX. (OK I confess I always thought kind of; "Yamaha? If there would'nt be Steinway I would think thats a quite decent Pianoproducer, but sorry we know Steinway and thats the simple Problem of Yamaha")
So here is what I would like that a good piano-samplelibrary should be able to sound inspiringly convincing in each single musical moment:
(And sorry, for me a musical "mockup" is not what is produced digital , but what is nothing mor but a jusst short excerpt of the real music but not the music itself.) So here you get the whole pieces:
VSL-Yamaha CFX Synhron: Franz Liszt: Don Giovanni-Fantasy (with Ossia) (Steffen Fahl), (15'05)
VSL-Yamaha CFX Synchron: Maurice Ravel: Scarbo (Steffen Fahl), (7'54)
(If you are interested I can also upload the other movements of Gaspar de la nuit, but to keep it handsome I hesitate to do.)
(Btw I used the Full Version)
To summarize my judgement: So please VSL do not let us wait for the Synchron Steinway to long and while working on it keep always everything in mind what a good pianist want to do with a good piano 😉