This is a 4-day, bi-annual expo (Spring-late March & Autumn-late October) in Ste. Marie-aux-Mines, Alsace, France.
> the 21st edition will be 25-28 October 2012.
There are merchants selling french-made high-quality fabrics, sewing notions, sewing patterns, sewing machines. There are "cr�ateurs" selling original clothing and jewlery. There are fashion shows featuring 3 designers.
I attended the 20th edition, in March 2012. It was fantastic! I highly reccommend it if you want to source interesting french-made fabric.
I have a more detailled review under "Sewing Stores" entitled Salon Mode et Tissus.