1.0.0-beta3 is a developer preview for managing Azure resources. It includes a new developer experience for managing major parts of Azure Compute, Storage, Networking, Resource Manager, Key Vault, and Batch.
Everything in 1.0.0-beta2
Virtual machine scale sets
Virtual machine extensions
Load balancers
Key vaults
Batch accounts
You can find samples on how to use them here: https://github.com/azure/azure-sdk-for-java#sample-code.