There are two parts to this topic:
1) Completed: Bypass the lobby for PSTN: The ability for admins and organizers to be able to specify a meeting option to bypass the PSTN lobby independently of the VoIP lobby.
2) On the backlog: Ability for an organizer joined via PSTN to admit users from the lobby with a PIN. If you enable “Always let callers bypass the lobby” in your meeting options, people calling in by phone will join your meeting without having to wait for someone to admit them. See details here: https://support.microsoft.com/office/change-participant-settings-for-a-teams-meeting-53261366-dbd5-45f9-aae9-a70e6354f88e
Please Note: In Q2CY20, we launched a new default in for the Teams meeting policy (https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=63388). If tenants have not modified their default meeting policy, lobby is now enforced.
This request is still queued within our backlog. No new details yet.
Improvements to day/work week/week view are in the public ring. Our focus now is a new scheduling experience and scheduling assistant, appointments and more.
For feedback related to Group Calendar please see this User Voice item: https://microsoftteams.uservoice.com/forums/555103-public/suggestions/16933204-include-office-365-group-calendar-in-teams.