Well, the game seems to still exist !
A small company, founded by one of the original developers, is still selling it http://www.wyrmkeep.com/ite/
, has produced an audio-CD with the soundtrack http://www.wyrmkeep.com/ite/music.html
and an FAQ enlightens the past of this game a bit : http://www.wyrmkeep.com/ite/ite_faq.html
. There is also an interesting Interview : http://www.adventuregamers.com/display.php?id=286
I still have this game in good memories, so I'm quite pleasantly surprised tht it still exists !