matrix-doc/proposals/2077-rooms-v5.md

MSC2077 - Room version 5

This MSC proposes creating room version 5, which will enforce the signing key valid_until_ts timestamps proposed in MSC2076.

Proposal

The new room version is called 5. The only difference between v5 and v4 is that v5 rooms enforce the valid_until_ts timestamp on signing keys as proposed in MSC2076.

It is not yet proposed to change the default room version to v5. Version 5 will be considered a "stable" version.

Notes

See also MSC2002, which proposed room v4 but also mentioned that a v5 was anticipated and gave some context for this change.