Emergency contacts can open your files
Emergency access now covers attachments. When your trusted contact opens your vault after the waiting period, items with files show a Files list, and each file downloads and decrypts on their device, the same way your own files do.
They only get files from what you chose to share with them: everything, or the one vault you picked. If you deny the request or remove the contact, downloads stop straight away. The server still only ever sees encrypted files. See emergency access.
For developers: the new endpoint is in the sync API.