Release post: https://mau.fi/blog/2024-10-mautrix-release/

• Bumped minimum Go version to 1.22.
• Dropped support for unauthenticated media on Matrix.
• Changed import path to go.mau.fi/mautrix-whatsapp.
• Rewrote bridge using bridgev2 architecture.
  • It is recommended to check the config file after upgrading. If you have prevented the bridge from writing to the config, you should update it manually.
  • Group management features and commands are not yet available. If you rely on those, it may be better to wait for the next release.

• Added support for receiving Meta AI messages.
• Fixed m.relates_to handling bug in previous release.

Note: this release has a bug handling replies in encrypted rooms from clients that don't use mautrix-go or matrix-rust-sdk. Element Web with Rust crypto and Element X should work fine, but other clients likely won't. It is recommended to skip this release if you use end-to-bridge encryption with such clients.

• Added proxying options to config.
• Updated fallback message for live locations and polls to clarify the user should open the native WhatsApp app.

• Changed media download retries to be handled asynchronously instead of blocking other messages.

• Bumped minimum Go version to 1.21.
• Added 8-letter code pairing support to provisioning API.
• Added more bugs to fix later.
• Renamed default branch from master to main.

• Added support for sending media to channels.
• Fixed voting in polls (seems to have broken due to a server-side change).
• Improved memory usage for bridges with lots of portals.

• Added support for channels in join and open commands.
• Added initial bridging of channel admin to room admin status.
• Fixed panic when trying to send message in a portal which has a relaybot set if the relaybot user gets logged out of WhatsApp.

• Added basic support for channels.
• Added default mime type for outgoing attachments when the origin Matrix client forgets to specify the mime type.
• Fixed legacy backfill creating portals for chats without messages.
• Updated libwebp version used for encoding.

• Stopped using libwebp for decoding webps.

• Added support for double puppeting with arbitrary as_tokens. See docs for more info.
• Added retrying for media downloads when WhatsApp servers break and start returning 429s and 503s.
• Fixed logging in with 8-letter code.
• Fixed syncing community announcement groups.
• Changed "Incoming call" message to explicitly say you have to open WhatsApp on your phone to answer.