From the always informative Chuck Cowdery

There hasn’t been any kind of official announcement, but Wild Turkey is in the process of rolling out a new, 81° proof (40.5% ABV) version of Wild Turkey Rye, leading to some confusion about the status of the 101° proof (50.5% ABV) original. […]

Yes, an 81° proof version of Wild Turkey Rye is being introduced as a companion to the 81° proof version of Wild Turkey Bourbon that was introduced last year. However, the 101° proof version of Wild Turkey Rye is not being discontinued. It will, however, be in short supply for probably the rest of 2012 due to the recent surge in rye whiskey popularity, but it is not being discontinued and it will be back. Due to its temporary unavailability, it was expedient for the company to list 81 by replacing 101 in some states.