The new Mutec flash board (for Tyros/Motif/MoXF) is presented in the new Yamaha production guide, page 12:
http://www.easysounds.eu/MusicProductionGuide_2014_05_EN.pdf

Sorry, I wanted to post this in the general arranger forum...

np I can move it there.

Thanks for moving it, sorry the topic is posted twice now. Anyway, although This mentioning in the production guide is no official statement by Yamaha, the Mutec boards for Yamaha have received a lot of positive reviews, and I know of 3 users who have successfully implemented the new 2 gigabyte board in the MoXF. I might buy it as well because I have filled up my 1 GB board, and there is not enough space left for the "Symphonic Strings for Motif".