I don't have any solid info on when these devices will hit the market or how much they will cost, but I can share the specs.
The Boox R65 is running Android 2.3 on a 1GHz CPU. It also has 256MB of RAM, 4GB of storage, a microSD card slot, and Wifi. The 6" screen has a resolution of 1024x758 as well as a frontlight and IR touchscreen.
This ereader supports a broad range of formats, including PDF, Epub, FB2, txt, and more. According to the specs it will support TTS, and it can also play MP3 and WAV files.
Onyx hasn't released any specs on the battery life, but I do know that this tablet weighs in at 248g, which is about 50g less than the Kindle Paperwhite. There's also no information on whether this tablet will ship with Google Play, but it will be an open device. As we saw in the video I posted a little while ago, Onyx plans to offer this as an Android tablet and that means you will be able to install your own apps.
I don't have much info on the Boox C65, but I would expect that this tablet will also be an open device. As you can see, it looks quite different from the R65, but it has the same CPU, screen, frontlight, and general features as the R65. It too is running Android 2.3.
But instead of an IR touchscreen, the C65 has a capacitive touchscreen.
And assuming the specs aren't in error, the C65 also has 4G chip inside (in addition to the Wifi). To be honest, I'm not sure whether we can trust that detail. The listing for this ereader also shows that it weighs under 200g, or less than the R65. I would think that the addition of a 4G chip would also require a larger battery. Sure, the 4G would be turned off most of the time, but a bigger battery would still be a good idea.
Update: A reader has found a second set of specs that shows that the r65 has Wifi. There's no mention of 4G connectivity. Thanks, Cookie.
But we can set aside the question of whether this tablet has 4G because there is a bigger issue here. Both of these tablets run Android 2.3. That is a woefully out of date version of Android, and it will limit what can be done with these tablets. A number of apps already require a newer version of Android in order to use all the features and that situation is going to become even more common as years go by.
If you are thinking about getting one of these tablets and using it for a year or more, you're probably going to want a newer version of Android. I would. If nothing else it would give me the option of installing the newest apps, and IMO that is the whole point of buying an open device.