2025/10/28 - 1 updated api methods
Changes Amazon Simple Storage Service / Features: Add conditional writes in CopyObject on destination key to prevent unintended object modifications.
2025/09/08 - 6 updated api methods
Changes This release includes backward compatibility work on the "Expires" parameter.
2025/07/15 - 5 new api methods
Changes Amazon S3 Metadata live inventory tables provide a queryable inventory of all the objects in your general purpose bucket so that you can determine the latest state of your data. To help minimize your storage costs, use journal table record expiration to set a retention period for your records.
2025/07/02 - 4 updated api methods
Changes Added support for directory bucket creation with tags and bucket ARN retrieval in CreateBucket, ListDirectoryBuckets, and HeadBucket operations
2025/06/25 - 20 updated api methods
Changes Adds support for additional server-side encryption mode and storage class values for accessing Amazon FSx data from Amazon S3 using S3 Access Points
2025/06/18 - 1 new 5 updated api methods
Changes Added support for renaming objects within the same bucket using the new RenameObject API.
2025/05/29 - 1 updated api methods
Changes Adding checksum support for S3 PutBucketOwnershipControls API.
2025/02/14 - 1 updated api methods
Changes Added support for Content-Range header in HeadObject response.
2025/02/06 - 2 updated api methods
Changes Updated list of the valid AWS Region values for the LocationConstraint parameter for general purpose buckets.
2025/01/15 - 38 updated api methods
Changes This change enhances integrity protections for new SDK requests to S3. S3 SDKs now support the CRC64NVME checksum algorithm, full object checksums for multipart S3 objects, and new default integrity protections for S3 requests. The S3 client attempts to validate response checksums for all S3 API operations that support checksums. However, if the SDK has not implemented the specified checksum algorithm then this validation is skipped. Checksum validation behavior can be configured using the ``when_supported`` and ``when_required`` options - in code using the ``response_checksum_validation`` parameter for ``botocore.config.Config``, in the shared AWS config file using ``response_checksum_validation``, or as an env variable using ``AWS_RESPONSE_CHECKSUM_VALIDATION``. Added support for the CRC64NVME checksum algorithm in the S3 client through the optional AWS CRT (``awscrt``) dependency. S3 client behavior is updated to always calculate a CRC32 checksum by default for operations that support it (such as PutObject or UploadPart), or require it (such as DeleteObjects). Checksum behavior can be configured using ``when_supported`` and ``when_required`` options - in code using the ``request_checksum_calculation`` parameter for ``botocore.config.Config``, in the shared AWS config file using ``request_checksum_calculation``, or as an env variable using ``AWS_REQUEST_CHECKSUM_CALCULATION``. Note: Botocore will no longer automatically compute and populate the Content-MD5 header.
2024/12/03 - 3 new api methods
Changes Amazon S3 Metadata stores object metadata in read-only, fully managed Apache Iceberg metadata tables that you can query. You can create metadata table configurations for S3 general purpose buckets.
2024/12/02 - 2 updated api methods
Changes Amazon S3 introduces support for AWS Dedicated Local Zones
2024/11/25 - 2 updated api methods
Changes Amazon Simple Storage Service / Features: Add support for ETag based conditional writes in PutObject and CompleteMultiPartUpload APIs to prevent unintended object modifications.
2024/11/22 - 4 updated api methods
Changes Add support for conditional deletes for the S3 DeleteObject and DeleteObjects APIs. Add support for write offset bytes option used to append to objects with the S3 PutObject API.
2024/10/16 - 2 updated api methods
Changes Add support for the new optional bucket-region and prefix query parameters in the ListBuckets API. For ListBuckets requests that express pagination, Amazon S3 will now return both the bucket names and associated AWS regions in the response.
2024/10/02 - 2 updated api methods
Changes This release introduces a header representing the minimum object size limit for Lifecycle transitions.
2024/09/18 - 1 updated api methods
Changes Added SSE-KMS support for directory buckets.
2024/08/20 - 2 updated api methods
Changes Amazon Simple Storage Service / Features : Add support for conditional writes for PutObject and CompleteMultipartUpload APIs.
2024/08/15 - 1 updated api methods
Changes Amazon Simple Storage Service / Features : Adds support for pagination in the S3 ListBuckets API.
2024/07/02 - 1 updated api methods
Changes Added response overrides to Head Object requests.
2023/11/28 - 2 new 15 updated api methods
Changes Adds support for S3 Express One Zone.
2023/11/21 - 2 updated api methods
Changes Add support for automatic date based partitioning in S3 Server Access Logs.