Like the first one it will be released under a CC licence - which means that it should work on any e-reader. Getting it into different formats so that it looks lovely is a *bit* trickier, and I'll be seeing if I can get some volunteers to have a swing at it when we release it. All of which should be free. (And I hope that not many Americans paid huge amounts of cash for the original on the Kindle when the full text is available on www.archive.org) There may also be something in audio...