I don't think it's actually got anything to do with Planescape Torment.
It is not in the D&D Planescape setting and won't include the same characters.
But:
"Team. If you were looking for team continuity, you've got it. Many key members who played a role in the Planescape setting and Planescape: Torment are involved in Torment: Tides of Numenera. Colin McComb and Monte Cook were two of the three primary writers for TSR’s Planescape setting. Colin was also a key designer on PS:T, where he worked closely with lead designer Chris Avellone. For Torment: Tides of Numenera, Colin is leading the creative vision in the setting that Monte has crafted. The two are also joined by their long-time partner Ray Vallese, who edited and wrote for the Planescape setting and who'll be editing Torment content. (That’s right – the quality of writing for Torment is so important that we have a professional editor on the team.)
We have the honor to work again with Mark Morgan, who composed PS:T’s music. ..."
Edit: so <fry> "shut up and give them your money!" </fry>