For descriptions of the updates and new tools that will improve your Azure development experience, see this blog post.
For more details about new features and updates, check out these resources:
Automate service management and service usage through PowerShell scripts. Recent releases include non-interactive login for Microsoft organization accounts and new cmdlets for Azure File Service, Azure Resource Manager, and HDInsight.
Manage the creation, deployment, and destruction of Azure resources through a new .NET API.
Download .NET libraries for Service Bus, Storage, Caching, Media Services, and more.
Manage services and accomplish common tasks from a lightweight cross-platform command line tool. Recent releases include support for Azure Active Directory authentication for all commands, new Azure Resource Manager tags, and secure token store on Windows and Mac.
PowerShell Tools for Visual Studio brings native PowerShell language support directly into the IDE. In addition to basic editing features such as syntax highlighting and IntelliSense, it also provides more advanced features like debugging, project support, a command line console and unit test adapter.