It's official, here is an article speculating on it. Kimiec from Nashville was named today.
From Buffalo News - Diocese looks to Nashville prelate:
"The Catholic Diocese of Buffalo was preparing to announce the naming of a new bishop, perhaps as early as this morning, and speculation Wednesday centered on Bishop Edward U. Kmiec, the 68-year-old prelate of the Diocese of Nashville, Tenn.
Western New York Catholics have been waiting eight months for a successor to Archbishop Henry J. Mansell, who became archbishop of Hartford in December 2003.
Several other dioceses have been awaiting a new bishop, as well, but none is as large or has waited as long as the Buffalo Diocese.
Auxiliary Bishop Edward M. Grosz has been leading the diocese in the absence of what is known as the 'ordinary' bishop. "