[tomsem]

I tried AZW3 (what is downloaded from Content & Devices, which should be KF8). It was able to display cover, title, etc, but it suggested it had DRM or is corrupt and would not open it.

AZW3 converted to ePub loads just fine.

That said, there is no support page for Pocketbook Era on the web site yet, hence no release notes.

I suppose AZW = Mobi 7? or in calibre terms, MOBI? I may try it later. It should at least support that, I think it has for some time.

Besides that, it has more than met my expectations. I got it mostly for the TTS, and to explore reading life outside the Kindle bubble.

I also installed the iPhone app. I'm impressed! TTS built-in, supports sync with Pocketbook Cloud, DropBox, Google Drive, Google Books (?) and access to OPDS catalogs like Feedbooks and Internet Archive. The book I side-loaded over USB uploads and can be read on my other devices. The interface is one of the cleanest I've seen. It looks like it will use any font installed on iOS (presumably custom fonts as well).