***MSSQL**: New Microsoft SQL Server data source [#10093](https://github.com/grafana/grafana/pull/10093), [#11298](https://github.com/grafana/grafana/pull/11298), thx [@linuxchips](https://github.com/linuxchips)
***Prometheus**: The heatmap panel now support Prometheus histograms [#10009](https://github.com/grafana/grafana/issues/10009)
***Postgres/MySQL**: Ability to insert 0s or nulls for missing intervals [#9487](https://github.com/grafana/grafana/issues/9487), thanks [@svenklemm](https://github.com/svenklemm)
***Graph**: Align left and right Y-axes to one level [#1271](https://github.com/grafana/grafana/issues/1271) & [#2740](https://github.com/grafana/grafana/issues/2740) thx [@ilgizar](https://github.com/ilgizar)
***Graph**: Thresholds for Right Y axis [#7107](https://github.com/grafana/grafana/issues/7107), thx [@ilgizar](https://github.com/ilgizar)
***Graph**: Support multiple series stacking in histogram mode [#8151](https://github.com/grafana/grafana/issues/8151), thx [@mtanda](https://github.com/mtanda)
***Alerting**: Pausing/un alerts now updates new_state_date [#10942](https://github.com/grafana/grafana/pull/10942)
