During an interview with PCGamesN, Eidos Montreal head David Anfossi explained that the Dues EX franchise is on the backburner whilst they are busy completing other projects but they have no intention at all to return to the Thief franchise, he corroborated that statement with a tweet (which he deleted afterwards) not long after that.
This is a companion discussion topic for the original entry at https://ink.mostepic.win/eidos-montreal-head-says-thief-is-dead/