Support for multiple trails: You can now create up to 5 trails in the AWS GovCloud (US) region. Different stakeholders such as IT auditors,security administrators, and developers can create and manage their own trail. Additionally, and you can prescribe granular access control to allow or deny access to specific trails for specific users. For more details,refer to the Multiple Trails section of the CloudTrail User Guide. One trail per region is free. Charges apply for additional trails. For pricing details, go to the CloudTrail pricing page.
Source: amazon.com