The Onyx Boox Euclid runs a current version of Android on a reasonably powerful CPU, but it also has an older 9.7" screen.
That screen has a capacitive touchscreen and frontlight, but that doesn't change the fact the resolution is 1200 x 825 (the same as on the Kindle DX). It also has a 1.6GHz quad-core CPU with 1GB RAM and 16 GB internal storage.
Weighing in at 410 grams, the Euclid has a 3Ah battery. It also has Wifi and Bluetooth.
You can buy the Euclid on Amazon for $397.
Four hundred dollars is a lot to spend on an ereader with an older screen. Still, the new version of Android might make it worthwhile. What do you think?