We acknowledge the customer demand for Private Channels and have been hard at work on it. Private Channels is currently in preview with a select group of customers. We expect to release the feature to the public later this Fall, and will update here when we are starting to roll out to all customers. We appreciate all the feedback you have provided to us on this forum and thank you for your patience.
~AlexRonald Bosch commented
The company-invitation seems by far the most important to me, as it would be very helpful in reducing the amount of Teams that are currently being created because of different focus groups, that have some overlap but also need some privacy for their own documents.