• Company Communicator can be configured to install itself to recipients who do not have the app already installed, so that CC can deliver the message to them. This is an optional feature that must be set during deployment, or later on in app service settings (ProactivelyInstallUserApp=true), and requires the TeamsAppInstallation.ReadWriteForUser.All Graph scope.
• Localizing the app is easier. We finished extracting user-facing strings into resource files. If translations are available, the CC user interface will follow the Teams language setting. (Note that the content of a message sent by CC remains in its original language.)
• Refactoring of the send pipeline, and various bug fixes.

Thank you to @cbitter78 and @garystewart247 for their contributions!

Solution overview: https://github.com/OfficeDev/microsoft-teams-company-communicator-app/wiki/Solution-overview Migration guide from v2: https://github.com/OfficeDev/microsoft-teams-company-communicator-app/wiki/v3-migration-guide