I know I have seen the Epic Arcane Trickster listing somewhere but can't find it. Anyone else have an idea of where it is shown?
Check out the SRD version here.
the epic arcane trickster was updated with the 3.5 accessory update booklet, available at the wotc website:
http://www.wizards.com/default.asp?x=dnd/dnd/20030718a
maybe that is what you're looking for. i also think i saw it in a FR book, maybe the players guide to faerun? don't have my books with me...