What it will do
Shared storage where who can open a file is decided by the same rules that decide everything else, and where sharing something outside the organisation is a deliberate act rather than an accident.
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.