Just found some old notes that I wrote a few years ago in an email regarding this 'Final Cut':
I eventually did get the DVD and had a side by side comparison of what the changes were, some were really geeky like he changed the serial number on the snakeskin when looking through the microscope. The dove flying off at the end, now has a completely different backdrop instead of looking like a factory wall in an industrial estate, but the resolution has radically dropped so you see a pixelated dove instead. Generally I don't care much for the new dark & contrast look of the final cut, massive amounts of detail are lost, oh and the one sweary f-word has been replaced by "father". I also noticed that the editing has been done in blocks of approx. 10 mins each so looking at the two versions side by side the new version gets out of step when additional scenes are added then judders back into step as scenes are trimmed down. The chase scene at the end has a lot of resequencing. The soundtrack is much improved. The much touted 'extra minutes' are rather disappointingly about 3 minutes of extra rolling credits at the end.
I think I prefer the old directors cut, because it looks better and most of the additional scenes on the new 'final cut' don't really add anything or are just scenes that have their order sequenced differently. The dove flying off does look hokey though.