It appears that earlier reports of the Chuck vs Wandy fight taking place at UFC 76 in September may be accurate. According to Wanderlei Silva’s personal webiste, the fight seems to have been agreed upon.

The hour arrived! The date of the fight of Wanderlei Silva is confirmed. It will be day 22 of September, in U.S.A., place and schedule still not defined. The confrontation between Wanderlei Silva and Chuck Lidell already had been divulged has about two months, and now it increases the expectation of the fans in following the final preparation. After many challenges, Lidell will have the chance to face intense Wanderlei, that are in constant preparation, treinos and an infinite will in winning this confrontation. Also other fights for the UFC are marked: In UFC 74, day 25 of August, they will face Randy Couture and Gabriel Gonzaga and day 09 of September Quinton Jackson face Dan Henderson, for UFC 75.

(roughly translated from the following)
Chegou a hora !!! Está confirmada a data da luta de Wanderlei Silva. Será dia 22 de setembro, nos EUA, em local e horário ainda não definidos. O confronto entre Wanderlei Silva e Chuck Lidell já havia sido divulgado há cerca de dois meses, e agora aumenta a expectativa dos fãs em acompanhar a preparação final. Depois de muitos desafios, Lidell terá a oportunidade de enfrentar Wanderlei, que está em preparação constante, treinos intensos e uma vontade infinita em vencer este confronto. Também estão marcadas outras lutas pelo UFC: No UFC 74, dia 25 de agosto, se enfrentarão Randy Couture e Gabriel Gonzaga e dia 09 de setembro Quinton Jackson enfrenta Dan Henderson, pelo UFC 75.