I got mine today. Fiddled with it for a while, so far so good. Everything is working as expected. I don't have high expectation for any E Ink device.
When I opened it, I found some fingerprints on the screen. If it's not the first batch for sale, I probably would think it's a returned item from an unsatisfied buyer. Maybe Boox is too busy at new products to ask their tester or assembly line workers wear gloves. Overall the build quality is fine, better than my Max2.
After a heavy CPU use, like installing several Apps, you can feel the lower part of the device back become a bit of warmer. Common use won't trigger this issue.
The third party home-brewed app Floating F5 I introduced before in the forum can be found in the built-in app store. A little surprise.
Hope you guys can get your Nova delivered safely.