I was just about to pull the trigger on a T63 when I saw that Boyue is releasing an updated 6-inch called the JDRead Venus.
Its main features are a glass screen, thinner body (6.5 mm), Android 4.4, and a freescale processor. The battery is rather small (2000 mAh vs 2800 in the T63) though they claim the new processor will be much more power efficient. It maintains the home button and page turn keys on either side [correction: there are no page turn keys, what I was seeing was the power button]. It looks like it is partly metal. The screen is also still 300dpi.
It's only available through their Chinese website and ships to Hong Kong and Taiwan as well as China. The current deal is 1100 yuan (~160USD) for the reader, a case, some kind of subscription to their ebook market, and free shipping. This is limited to the first 2000 customers, so the final retail price may be a bit higher (with more markups if you're ordering from a re-seller of course).
I'm pretty interested though I know there are risks since we don't know whether the firmware includes English or if there are any new roadblocks to sideloading apps, rooting, or installing the play store.
Here's the product page:
https://z.jd.com/project/details/75997.html