On the heels of More Azure Blob Storage enhancements come more enhancements for Azure Data Lake Store Gen2 (ADLS Gen2):

Archive tier is now GA: The archive tier provides an ultra-low cost tier for long term retention of data while keeping your data available for future analytics needs.  Tier your data seamlessly among hot, cool, and archive so all your data stays in one storage account.  Lifecycle management policies can be set so files are moved automatically to the archive tier when data access becomes rare.  When needed, data in the archive tier can be quickly and easily rehydrated so that the data is available for your analytics workloads. More info.

Immutable storage (preview): Immutable storage provides the capability to store data in a write once, read many (WORM) state. Once data is written, the data becomes non-erasable and non-modifiable, and you can set a retention period so that files can’t be deleted until after that period has elapsed. Additionally, legal holds can be placed on data to make that data non-erasable and non-modifiable until the hold is removed. This preview is currently available in Canada Central, Canada East, France Central, and France South. To enroll in the preview, complete this form.  More info.

File snapshots (preview): Use file snapshots to take an unlimited number of point-in-time snapshots of your files. These snapshots can be used to revert a file back to that snapshot in the case of accidental or inadvertent updates. Snapshots can also be retained so you can reference the content of a file at that point in time. File snapshots is currently available in preview in Canada Central, Canada East, France Central, and France South. To enroll in the preview, complete this form.  More info.

Static website (preview): Use static website to directly host static content from Azure Data Lake Storage, and view that site content from a browser by using the public URL of that website.  This preview is currently available in Canada Central, Canada East, France Central, and France South. To enroll in the preview, complete this form. More info.