The new Kindle Paperwhite, announced today, adds a bundle of font options for an e-ink display device that previously offered only PMN Caecilia. But most welcome to me in that list of options is "Publisher Font", which lets book designers make their own typographic choices (and embed their own fonts) just like they would in a book’s printed edition. I assume this equivalent to the “Original” option in Apple’s iBooks app. From the product page:
All six fonts on Kindle Paperwhite have been hand-tuned at the pixel level for maximum readability and comfort. Higher resolution allows for unprecedented sharpness. The new high-resolution display allows for elegant typeface options including Baskerville and Palatino.
These are pretty unimaginative choices, (in contrast to the latest book-friendly fonts added to iBooks), and Futura is an especially odd selection for long reading, but perhaps they are indeed well tuned for this particular display. I’ll write a more detailed report once I see the device in person.