The next Paizo Pathfinder adventure path after August's Wrath of the Righteous is The Mummy's Mask and will be set in Osirion. "Flying pyramids and alien invaders. Stargates?" (from Wolfgang Baur's Twitter feed).
I think two of the best modules were their Pyramid ones so hopefully this will build off of the themes of those. Otherwise it sounds like they might be bringing in too much weird stuff. An AP that does has ancient pyramid exploration would pretty awesome in its own right.
