We have announced that Group Owners will be able to leverage existing groups to drive membership in Office 365 Groups.
Hello, I’m updating the status of this UserVoice suggestion back to “thinking about it”, as it appears the previous status update was misleading. The core of the suggestion is to allow folders.
Keep on posting on this suggestion to create folders within group mailbox.Anonymous commented
To be able to replace DL's and shared mailboxes with groups, this needs to be implemented.
We are working on providing the ability to change the email address (both primary and secondary) associated with a group.
Roadmap item: https://products.office.com/en-US/business/office-365-roadmap?filters=&freeformsearch=27891&featureid=27891Anonymous commented