Added “mark as unread” option
Selectable playback speed for voice messages
Voice messages that have been listened to are now flagged with an ear symbol
Added tabs to contact list to either filter internal contacts or show all
Improved media selection with ability to scroll through and select in large view
Filtering in archive screen
Added Japanese and Chinese (traditional) translations
Design tweaks
Improved compatibility of video transcoding
Better performance of media picker
Various small improvements and bug fixes
New: Mark chats as unread (swipe right in chat overview)
Share Extension revamped
Support for right-to-left scripts in chats
Chinese (traditional and simplified) localization
Japanese localization
Voice messages are no longer forwarded as files but as voice messages
Voice messages, GIFs, and stickers are hidden in media preview
Fixed a bug that could occur when quoting messages that contain mentions
Various other improvements and miscellaneous minor bug fixes
New: Mark chats as unread (swipe right in chat overview)
Share Extension overhauled
Support for right-to-left scripts in chats
Chinese (simplified) localization
Japanese localization
Voice messages are no longer forwarded as files but as voice messages
Voice messages, GIFs, and stickers are hidden in media preview
Fixed a bug that could occur when quoting messages that contain mentions
Various other improvements and miscellaneous minor bug fixes
Global search: Search for text across all chats
Media drawer: Tap the paperclip icon to browse your media files in a scrollable drawer
Image search (optional): Search your images for common objects, activities, and places (the image recognition is based on a local machine learning model and does not send data to Threema's server or any third party)
Increased maximum group size to 256 members
Sending media files: Send images with individual resolutions without having to change the global settings
Image editor: Automatic recognition of faces to blur or cover with an emoji (works best with high-resolution images)
Video editor: Trim videos before sending
Media gallery: New “Show in chat” feature
Save to gallery: On Android 10 and above, media is now stored in the system’s Pictures, Video, Music, and Documents folders due to new “Scoped Storage” requirements by Google
Quotes: Quote any type of media, including images, videos, and voice messages
Long text messages: To keep the chat interface lean, messages containing a lot of text are truncated and can be expanded on demand
Polls: Re-sort answers using drag and drop when creating a poll
100 new emojis
Bug fixes, optimizations, and design improvements
The most important of the new features are explained in greater detail on the Threema blog.
Increased maximum group size to 256 members
Invalid Threema IDs are no longer included when calculating the number of recipients
Improved layout of the overview of Broadcast IDs
Improved “test message” workflow
Improved performance when sending messages via feeds, distribution lists, and groups
Various other improvements and minor bug fixes