If you're like me and have been keeping an eye on the development of Pathfinder, you might have read the interview with Todd Steward (a.k.a Shemeska in many forums who is a real expert in planes) at Planewalker.com (which was announced at Geek Related recently)
Part 2 of the interview just recently came up which concluded the interview. Although most of it doens't makes sense to me because I failed my Knowledge check on plane-y matters but I'm still excited to see the progress that Pathfinder is making.
Pathfinder Planes: Interview with Todd Steward Part 1
Pathfinder Planes: Interview with Todd Steward Part 2