Jester David
Hero
I believe they have said it will be web based. So it should be O/S neutral.I don't even know that Dungeonscape will run on my system without me running a Windows box or emulator. Unlike ePub, which I can read just about anywhere and various programs will convert to any format I need. If it works offline, on my computer I can emulate the necessary hardware, but that's a pain and of limited portability. Open-format documents are way easier to handle then closed-format documents handled by proprietary programs.
IIRC...