#### REST API Bulk Deletion ([#3436](https://github.com/netbox-community/netbox/issues/3436))
The REST API now supports the bulk deletion of objects of the same type in a single request. Send a `DELETE` HTTP request to the list to the model's list endpoint (e.g. `/api/dcim/sites/`) with a list of JSON objects specifying the numeric ID of each object to be deleted. For example, to delete sites with IDs 10, 11, and 12, issue the following request:
#### REST API Bulk Update ([#4882](https://github.com/netbox-community/netbox/issues/4882))
Similar to bulk deletion, the REST API also now supports bulk updates. Send a `PUT` or `PATCH` HTTP request to the list to the model's list endpoint (e.g. `/api/dcim/sites/`) with a list of JSON objects specifying the numeric ID of each object and the attribute(s) to be updated. For example, to set a description for sites with IDs 10 and 11, issue the following request:
* [#5146](https://github.com/netbox-community/netbox/issues/5146) - Add custom fields support for cables, power panels, rack reservations, and virtual chassis
* secrets.Secret: Removed `device` field; replaced with `assigned_object` generic foreign key. This may represent either a device or a virtual machine. Assign an object by setting `assigned_object_type` and `assigned_object_id`.