# Contents for Release Notes

> # New Features

> ## Updated Security

> ## Updated Communication Services

> ### Parlay X 2.1 Short Messaging/SMPP and Extended Web Services Binary SMS/SMPP

> ### Parlay X 2.1 Multimedia Messaging Communication Service

> ### Native SMPP

> ## Platform Test Environment Updates

> ## New Error Codes

> ## Supported Interfaces

> ## Supported Configurations

> # Backwards Compatibility

> ## Platform Upgrades

> ## Management Operations

> ## Database

> ## Service Level Agreements

> # Services Gatekeeper 4.1.1 Known and Resolved Issues

> ## Resolved Issues in Services Gatekeeper 4.1.1

> ## Known Issues in Services Gatekeeper 4.1.1