Amazon Simple Storage Service
Console User Guide

Advanced Settings for S3 Bucket Properties

If you are in the old Amazon S3 console, to use the new console, choose Opt In in the following box, which appears on the old Amazon S3 console home page. Note that Opt In is not available in all Regions.  

                            Opt-in to new Amazon S3 console UI

This section describes how to configure advanced S3 bucket property settings for cross-region replication, event notification, and transfer acceleration.