# Matrix Specification v1.8 Changelog

|   |   | 
|---|---|
| Git commit | https://github.com/matrix-org/matrix-spec/tree/v1.8 |
| Release date | August 23, 2023 |

## Client-Server API

**Backwards Compatible Changes**

- [ ] Require callers to be joined to the room to report its events, as per [MSC2249](https://github.com/matrix-org/matrix-spec-proposals/pull/2249). ([#1517](https://github.com/matrix-org/matrix-spec/issues/1517))

**Spec Clarifications**

- [ ] Fix missing `type` property in the JSON schema definition of the `m.reaction` event.  Contributed by @chebureki. ([#1552](https://github.com/matrix-org/matrix-spec/issues/1552))
- [ ] Make sure examples types match schema in definitions. ([#1563](https://github.com/matrix-org/matrix-spec/issues/1563))
- [ ] Allow `null` in `room_types` in `POST /publicRooms` endpoints schemas. ([#1564](https://github.com/matrix-org/matrix-spec/issues/1564))
- [ ] Fix broken header formatting. Contributed by @midnightveil. ([#1578](https://github.com/matrix-org/matrix-spec/issues/1578))
- [ ] Render binary request and response bodies. ([#1579](https://github.com/matrix-org/matrix-spec/issues/1579))
- [ ] Fix description of MAC calculation in SAS verification. ([#1590](https://github.com/matrix-org/matrix-spec/issues/1590))
- [ ] Update link to SAS emoji definition data. ([#1593](https://github.com/matrix-org/matrix-spec/issues/1593))
- [ ] Fix various typos throughout the specification. ([#1597](https://github.com/matrix-org/matrix-spec/issues/1597))


## Server-Server API

**Deprecations**

- [ ] Deprecate `matrix` SRV lookup steps during server discovery, as per [MSC4040](https://github.com/matrix-org/matrix-spec-proposals/pull/4040). ([#1624](https://github.com/matrix-org/matrix-spec/issues/1624))

**Backwards Compatible Changes**

- [ ] Add `matrix-fed` SRV lookup steps to server discovery, as per [MSC4040](https://github.com/matrix-org/matrix-spec-proposals/pull/4040). ([#1624](https://github.com/matrix-org/matrix-spec/issues/1624))

**Spec Clarifications**

- [ ] Document why `/state_ids` can respond with a 404. ([#1521](https://github.com/matrix-org/matrix-spec/issues/1521))
- [ ] Fix response definition for `POST /_matrix/federation/v1/user/keys/claim`. ([#1559](https://github.com/matrix-org/matrix-spec/issues/1559))
- [ ] Fix examples in server keys definition. ([#1560](https://github.com/matrix-org/matrix-spec/issues/1560))
- [ ] Make sure examples types match schema in definitions. ([#1563](https://github.com/matrix-org/matrix-spec/issues/1563))
- [ ] Allow `null` in `room_types` in `POST /publicRooms` endpoints schemas. ([#1564](https://github.com/matrix-org/matrix-spec/issues/1564))
- [ ] Fix broken header formatting. Contributed by @midnightveil. ([#1578](https://github.com/matrix-org/matrix-spec/issues/1578))
- [ ] Remove spurious mention of a "default port" with respect to SRV record lookup. ([#1615](https://github.com/matrix-org/matrix-spec/issues/1615))
- [ ] Switch to ordered list for server name resolution steps. ([#1623](https://github.com/matrix-org/matrix-spec/issues/1623))


## Application Service API

**Spec Clarifications**

- [ ] Fix type of custom `fields` in thirdparty lookup queries. ([#1584](https://github.com/matrix-org/matrix-spec/issues/1584))


## Identity Service API

**Spec Clarifications**

- [ ] Make sure examples types match schema in definitions. ([#1563](https://github.com/matrix-org/matrix-spec/issues/1563))


## Push Gateway API

No significant changes.


## Room Versions

**Backwards Compatible Changes**

- [ ] Add room version 11 as per [MSC3820](https://github.com/matrix-org/matrix-spec-proposals/pull/3820). ([#1604](https://github.com/matrix-org/matrix-spec/issues/1604))
- [ ] Move `redacts` from top level to `content` on `m.room.redaction` events in room version 11, as per [MSC2174](https://github.com/matrix-org/matrix-spec-proposals/pull/2174). ([#1604](https://github.com/matrix-org/matrix-spec/issues/1604))
- [ ] Remove `creator` from `m.room.creator` events in room version 11, as per [MSC2175](https://github.com/matrix-org/matrix-spec-proposals/pull/2175). ([#1604](https://github.com/matrix-org/matrix-spec/issues/1604))
- [ ] Remove remaining usage of `origin` from events in room version 11, as per [MSC3989](https://github.com/matrix-org/matrix-spec-proposals/pull/3989). ([#1604](https://github.com/matrix-org/matrix-spec/issues/1604))
- [ ] Update the redaction rules in room version 11, as per [MSC2176](https://github.com/matrix-org/matrix-spec-proposals/pull/2176) and [MSC3821](https://github.com/matrix-org/matrix-spec-proposals/pull/3821). ([#1604](https://github.com/matrix-org/matrix-spec/issues/1604))


## Appendices

**Backwards Compatible Changes**

- [ ] Allow `+` in Matrix IDs, as per [MSC4009](https://github.com/matrix-org/matrix-spec-proposals/pull/4009). ([#1583](https://github.com/matrix-org/matrix-spec/issues/1583))

**Spec Clarifications**

- [ ] Clarify spec re canonical JSON to handle negative-zero; also, give an example of negative-zero and a large power of ten. ([#1573](https://github.com/matrix-org/matrix-spec/issues/1573))


## Internal Changes/Tooling

**Backwards Compatible Changes**

- [ ] Upgrade Swagger data to OpenAPI 3.1. ([#1310](https://github.com/matrix-org/matrix-spec/issues/1310))
- [ ] Create `@matrix-org/spec` npm package to ship the SAS Emoji data definitions & translations. ([#1620](https://github.com/matrix-org/matrix-spec/issues/1620))

**Spec Clarifications**

- [ ] Update the CI to validate the file extension of changelog entries. ([#1542](https://github.com/matrix-org/matrix-spec/issues/1542))
- [ ] Disclosure sections now only display their title when collapsed. ([#1549](https://github.com/matrix-org/matrix-spec/issues/1549))
- [ ] Fix the sidebar in recent versions of Hugo. ([#1551](https://github.com/matrix-org/matrix-spec/issues/1551))
- [ ] Bump jsonschema to validate JSON Schemas against Draft 2020-12. ([#1556](https://github.com/matrix-org/matrix-spec/issues/1556))
- [ ] Use Redocly CLI to validate OpenAPI definitions. ([#1558](https://github.com/matrix-org/matrix-spec/issues/1558))
- [ ] Use tag name as the OpenAPI definition version. ([#1561](https://github.com/matrix-org/matrix-spec/issues/1561))
- [ ] Make sure version in `x-changedInMatrixVersion` is a string. ([#1562](https://github.com/matrix-org/matrix-spec/issues/1562))
- [ ] Clarify usage of ABNF for grammar in the documentation style guide. ([#1582](https://github.com/matrix-org/matrix-spec/issues/1582))
- [ ] Remove unnecessary `oneOf`s in JSON schemas. ([#1585](https://github.com/matrix-org/matrix-spec/issues/1585))
- [ ] Update the version of Hugo used to render the spec to v0.113.0. ([#1591](https://github.com/matrix-org/matrix-spec/issues/1591))
- [ ] Fix rendered changelog with new version of towncrier. ([#1598](https://github.com/matrix-org/matrix-spec/issues/1598))
- [ ] Improve the layout of tables on desktop displays. Contributed by Martin Fischer. ([#1601](https://github.com/matrix-org/matrix-spec/issues/1601))