--- type: docs title: "Preview features" linkTitle: "Preview features" weight: 4000 description: "List of current preview features" --- Preview features in Dapr are considered experimental when they are first released. These preview features require explicit opt-in in order to be used. The opt-in is specified in Dapr's configuration. See [How-To: Enable preview features]({{}}) for information more information. ## Current preview features | Description | Setting | Documentation | |-------------|---------|---------------| | Preview feature that enables Actors to be called multiple times in the same call chain allowing call backs between actors. | Actor.Reentrancy | [Actor reentrancy]({{}}) | | Preview feature that allows Actor reminders to be partitioned across multiple keys in the underlying statestore in order to improve scale and performance. | Actor.TypeMetadata | [How-To: Partition Actor Reminders]({{< ref "howto-actors.md#partitioning-reminders" >}}) | | Preview feature that enables you to call endpoints using service invocation on gRPC services through Dapr via gRPC proxying, without requiring the use of Dapr SDKs. | proxy.grpc | [How-To: Invoke services using gRPC]({{}}) |