Mentioned in this story from UK Toyfair over at Action-Figure.com. I am assuming that, with the 19 pound price tag, this will be in the 12" line. Maybe like the old talking GI-Joe.
I agree, for Hasbro, it is outstanding! I found these images from Comic-Con over at Action-Figure.net that I hadn't seen before (note: unsure whether this is the "talking" Indy figure from Hasbro):