Chris Avellone had a presentaion at 2013's Rezzed the UK PC and indie gaming convention organized by RockPaperShotgun and Eurogamer. The plan was to talk about and show more detail for Project Eternity.
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Update: Due to technical issues, the presentation didn't actually start until around the 31 minute mark, so there was no time for a Q&A session.
Chris did however find the time to show a bunch of new screenshots, concept art and even some design documents from Wasteland 2. He also ran some gameplay footage, but it was just the prototype demo that we've already seen.
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