If the release schedule is similar to FF4, it should be here in 6 months. Although I hope it is much more soon =)
source
It has been announced that Final Fantasy VI, regarded by many as one of the finest additions to Square Enix’s most successful franchise, is due to release on Virtual Console in Japan next month.
The title, which is the last Final Fantasy game from the classic era of Nintendo platforms to make its way onto the service, is due to be available for 900 Wii Points, and has been earmarked by Nintendo as being a premium title.
source
-Insert Inspiring Quote-