Forget about fashion. The Wertheimers, that tight-lipped family behind Chanel, are about to buy another Bordeaux vineyard. After having snapped up the Chateau Rausan-Segla, a deuxieme cru Medoc, two years ago for some $50 million, they are about to drop $22 million on Chateau Canon, a premier grand cru classe Saint-Emilion, and a good, soft merlot, according to a wine industry source. Meanwhile, LVMH Moet Hennessy Louis Vuitton is rumored to be eyeing a stake in the prestigious Chateau d’Yquem, one of France’s best Sauternes vineyards. A spokeswoman for the Wertheimers could not be reached for comment, and LVMH would not comment. But wine experts are admiring their timing. The 1995 vintage is expected to provide a comeback for Bordeaux, and prices for ’95 bottles are likely to be 20 to 40 percent higher than in 1994.