Thief 4 - Big Reveal at GDC?

Thief 4 was officially announced some time back but we haven't actually seen anything yet.  It looks like GDC (late Feb to early March) might see the game actually unveiled, with NeoGAF noticing a Thief presentation is scheduled.  Here's a snip from Eurogamer's newsbit:

According to the accompanying blurb, "Innovative audio has been at the heart of the original THIEF titles and Eidos Montreals new THIEF is no exception, this presentation will mark the first time that the game has been spoken about publicly."