I assume it will be just the same as what is available on the special edition dvd, in terms of "missing/lost scenes? Apparently, other footage is lost forever, buried under the M3!!! So I am not expecting anything new. However, as you say, let`s wait and see if HD does indeed do the print justice eh?
The so-called 'Final Cut' is a hybrid print which was screened on BBC TV about 20 years ago. Although longer than the theatrical cut, it is several minutes shorter than the 'Directors Cut' and is missing most of the footage at the beginning prior to Howie's arrival at the island. The "Directors Cut" was previously released on a 2-disc DVD with the theatrical cut back in 2001.