I bought a paperwhite so I can port my kindle video player (and other animation demos) to it. Currently my video code supports all previous eink kindles, but only the K3 and newer have fluid animation. I need to test my code on the 1024x768 eink display.
I have SDL mostly ported now, so we should soon have Doom running on the eink kindles too (and maybe Win95 in QEMU).