That's not what my local jaben boss told me. He said it is a different coloured one and the tweaked version is just a rumor or joke. Of course if anyone heard it first hand from Suyama san at Mook would be more credible but I don't seem to recall any member claiming to have directly get the quote from suyama san.
I talked to Suyama-san in person and he said it was a modified version of the Parterre, with different acoustical treatment applied and that it was only an experimental unit. No info given on whether there would be another version of the Parterre released in the future, a universalised Monet is confirmed though.
Actually there was some misunderstanding going on even among Mook's staff on that day. The guy standing at FitEar's booth actually told me it was a beta version of the Parterre made before the final version (what we have today) but I brought up the question to Suyama-san later when he came to the show and received a totally different answer.