We've successfully upgraded our Mastodon server to v4.6.0-beta.1+mementomods-2026-06-07, along with Mastodon Bird UI 4.0.0-beta.1.rc (nightly). Yes, beta, Mastodon has officially crossed from alpha into beta on the road to 4.6.

This update includes today's latest daily build with 119 new commits from upstream since mementomods-2026-05-26.

What's new in Mastodon core - these are the changes Mastodon Team have introduced us in the latest nightly version we are running:

✨️ New features

- Mastodon hit v4.6.0-beta.1, the version we've been chasing through the alpha cycle has crossed into beta, signalling the upstream 4.6 release is getting close
- Collections is in beta! You can now use them on Mementomori.social
- Export Custom Filters, you can finally back up or migrate your filter rules
- A new direct link from Privacy and reach settings to your profile editor saves a click
- Rule acceptance during signup is now a form (better keyboard and assistive tech support)
- Vertical text editing in the alt text editor for languages that write top-to-bottom
- Three new languages in the languages helper: Lazuri, Mingrelian, and Ottoman Turkish
- "Hidden account" message is less misleading when you visit a profile you can't see
- Several internal refactors (BundleColumnError ported to TypeScript, copy-to-clipboard extracted into a hook) that should make future patches smoother

🔧 Fixes & improvements

- Pile of Collections fixes: editor no longer lets you add the same account twice, ValidationError when loading many collections at once is gone, missing null check when importing collections from notifications, and an "about page" error when selecting a non-default Rules language
- Custom filter export had a wrongly-named param
- Profile API documentation link in CHANGELOG corrected
- "Change thumbnail" button no longer shows when it shouldn't
- Server rules and the custom closed-registrations message no longer break
- Custom emoji formatting in usernames inside the `EmptyState` component fixed
- Trending links: author name spacing tightened
- Advanced UI navigation overflow issue fixed
- Signature verification handles invalid keys gracefully
- Container builds no longer fail when the repo name has uppercase characters
- Blocked domains no longer linger in the Elasticsearch InstancesIndex after being unblocked
- Admin Mailer trends mail rendering fixed
- Stylesheet imports are now recursive

♿ Accessibility

- New `PageUp` and `PageDown` hotkeys for list navigation
- Post/feed hotkey navigation made more robust
- Differentiated accessible labels for About links in the footer

📦 Dependency updates

- Vite 8.0.16, Yarn 4.16.0, Sass 1.100.0, Sidekiq 8.1.6, ioredis 5.11.0, ws 8.21.0, axios 1.17.0, react-redux 9.3.0, @reduxjs/toolkit 2.12.0, pg 8.21.0, plus a security update for `@vitest/browser` and many smaller bumps

🐦‍⬛ Mastodon Bird UI 4.0.0-beta.1.rc (nightly)

This release adds Bird UI styling for the now-live Collections feature:

- Collections nav icon renders again (it was hidden by Bird UI's broad column-link icon-path reset)
- "Follows you" badge in account list items (collections lists, follower lists) uses the same dark pill style as in profiles
- Verified link badge in account list items mirrors the profile field verified style: Bird UI's tick icon and accent link color in place of the green gradient SVG
- All badges in account list items drop the core 4px padding so they sit flush in the row

Plus navigation polish:

- Notifications now sits in the second slot of the side navigation menu, right after Home
- Trends heading no longer renders a stray bottom border

Source code for our Mastodon: https://github.com/mementomori-social/mastodon
Source code for our Mastodon Bird UI: https://github.com/rollecode/mastodon-bird-ui/tree/nightly

As always, if you notice anything unusual or buggy, please reach out to me or any of the admins. Enjoy your time here, and feel free to message me with any questions or thoughts. 

If anything feels off, please let us know!

#MementoMoriSocial #Mastodon #MastoAdmin #BirdUI #MastodonBirdUI #Fediverse