Bulk Actions, Binary Support, Custom Plugins, New Website. All that and more!

Features:

• New protobuf protocol support (under the hood)
• Bulk actions instead of individual subscribes (under the hood)
• Official Plugin Support
• Monitoring Support
• Clustering Support (with small caveats)
• Listening Discovery Simplification
• V2 storage API
• V2 cache API
• Notify API

Improvements

• Lazy data parsing
• Improved deepstream lifecycle
• Upgraded development tools
• New deepstream.io website

Backwards compatibility

• All V3 SDKs no longer compatible due to protobuf binary protocol

Upgrade guide

You can see the upgrade guide for backwards compatibility here

TLDR;

You can see the in depth side explanation of the changes here