Dumb question: where can I find a description of what's new in the new versions of the betas as they install themselves? The "What's new" link in the "About Zotero" seems to be focussed on the release versions, not the betas. It would be nice to know what to look for, especially in what at least looks like a major jump (to 6.0). Are the changelogs for the betas available anywhere?
(New features are announced in pinned threads.)
I've updated the preview page with some newer details, but we'll be updating the PDF reader documentation when Zotero 6 ships.