* ui: Legacy UI has been removed. Setting the CONSUL_UI_LEGACY environment variable to 1 or true will no longer revert to serving the old UI. [[GH-5643](https://github.com/hashicorp/consul/pull/5643)]
FEATURES:
* **Connect Envoy Supports L7 Observability:** We introduce features that allow configuring Envoy sidecars to emit metrics and tracing at L7 (http, http2, grpc supported). For more information see [TODO](#TODO).
* **Connect Envoy Supports L7 Observability:** We introduce features that allow configuring Envoy sidecars to emit metrics and tracing at L7 (http, http2, grpc supported). For more information see the [Envoy Integration](https://consul.io/docs/connect/proxies/envoy.html) docs.
* **Centralized Configuration:** Enables central configuration of some service and proxy defaults. For more information see the [Configuration Entries](https://consul.io/docs/agent/config_entries.html) docs
* api: Implement data filtering for some endpoints using a new filtering language. [[GH-5579](https://github.com/hashicorp/consul/pull/5579)]
* snapshot agent (Consul Enterprise): Added support for saving snapshots to Azure Blob Storage.
* acl: tokens can be created with an optional expiration time [[GH-5353](https://github.com/hashicorp/consul/issues/5353)]
@ -46,7 +47,6 @@ BUG FIXES:
* acl: Fix legacy rules translation for JSON based rules. [[GH-5493](https://github.com/hashicorp/consul/issues/5493)]
* agent: Fixed a bug causing RPC errors when the `discovery_max_stale` time was exceeded. [[GH-4673](https://github.com/hashicorp/consul/issues/4673)]
* agent: Fix an issue with registering health checks for an agent service where the service name would be missing. [[GH-5705](https://github.com/hashicorp/consul/issues/5705)]
* agent: config is now read if json or hcl is set as the config-format or the extension is either json or hcl [[GH-5723](https://github.com/hashicorp/consul/issues/5723)]
* connect: fix an issue where Envoy would fail to bootstrap if some upstreams were unavailable [[GH-5499](https://github.com/hashicorp/consul/pull/5499)]
* connect: fix an issue where health checks on proxies might be missed by watchers of `/health/service/:service` API [[GH-5506](https://github.com/hashicorp/consul/issues/5506)]
* connect: fix a race condition that could leave proxies with no configuration for long periods on startup [[GH-5793](https://github.com/hashicorp/consul/issues/5793)]