What it will do
Shared calendars and scheduling, where availability and visibility follow the same permission rules that govern everything else, rather than a separate set nobody remembers to review.
Where it fits
Part of the planned productivity suite — a set of everyday working tools that share one identity, one design foundation and one set of controls, so that an organisation administers them together rather than separately.
Status
Planned. Specified, not yet built. There is nothing to try.