It is criminal that we don’t have the cut/extended scenes or new features after TWENTY (20) YEARS. Fortunately, Neil Jordan is very aware that we want these and hopefully he’ll do smtg about it.
Officially, as far as I know, there are no cut/extended scenes on any edition of IWTV *cries forever,* but allegedly there’s a new vid on the 20th Anniversary Blu-Ray: “Lestat, Louis, and the Vampire Phenomenon: A conversation with author Anne Rice about her influence on the new wave of vampires as heroes and anti-heroes.” but that isn’t a cut scene so like whatever idec.
AS FOR CUT SCENES, OUTTAKES, ALTERNATE SHOTS, BLOOPERS, ETC., ALL WE HAVE ARE SCRAPS FROM THE TRAILER LIKE THIS ONE:

^YES LOUIS I KNOW I FEEL YOUR PAIN RE: THE CUT SCENES.
We know there were other scenes in the script (do the google, it’s easy to find, and very entertaining!), at least one of which was storyboarded partially.
I console myself w/ production stills and behind the scenes gems that I find *still cries forever* but SOMEONE OUT THERE HAS THAT FOOTAGE. (Guessing it’s Mick Audsley & Joke van Wijk, the editors).