***OAuth**: Do not set SameSite OAuth cookie if cookie_samesite is None. [#18392](https://github.com/grafana/grafana/pull/18392), [@papagian](https://github.com/papagian)
### Bug Fixes
***PanelLinks**: Fix render issue when there is no panel description. [#18408](https://github.com/grafana/grafana/pull/18408), [@dehrax](https://github.com/dehrax)
# 6.3.0-beta4 (2019-08-02)
### Features / Enhancements
***Auth Proxy**: Include additional headers as part of the cache key. [#18298](https://github.com/grafana/grafana/pull/18298), [@gotjosh](https://github.com/gotjosh)