From " http://www.thedigitalbits.com "

We've contacted New Line after receiving a lot of questions from readers about this very issue. They tell us that The Lord of the Rings:the Fellowship of the Ring - Special Extended Edition 4-disc set due in November will TENTATIVELY feature a DTS audio option in addition to the Dolby Digital 5.1 EX track. Before you bombard us with more questions, no... we don't know if it will be ES 6.1. Having DTS on the extended version is ONLY planned at this time - there are no other details (official or otherwise) available. New Line can only confirm that they are indeed working to have DTS on the 4-disc set. A lot depends on the actual production (the tentative nature of this is likely due to concerns over disc space/quality issues - making sure the film looks great split over 2 discs with both DTS and Dolby Digital audio included). New Line has, however, told me that they expect to confirm the DTS option for sure sometime later this summer.

雖然還未非常確定(要到今年夏天之後)
但是還是希望真的能夠多個DTS!!