Microsoft will frequently launch a new product or product enhancement with the status label of “preview” or “public preview”.
The key Microsoft disclaimers to using a product or feature in preview status are as follows:
1) All previews are excluded from Microsoft SLAs and Warranties
2) Previews might not include customer support from Microsoft
3) Preview might not be brought forward into General Release status
Current list of Azure Products in Preview
https://azure.microsoft.com/en-us/roadmap/?status=InPreview
Office 365 Standard Release or First Release Options
Set up the Standard or Targeted release options in Office 365
Microsoft Product Roadmaps
Microsoft Cloud Platform Roadmap
Microsoft Dynamics 365 Roadmap
Microsoft Azure Roadmap
The official definition from Microsoft:
Preview features
To obtain your feedback, Azure offers the following preview features to you for evaluation purposes. A preview may include preview, beta, or other pre-release features, services, software, or regions. Previews are subject to reduced or different service terms, as set forth in your service agreement and the preview supplemental terms. Previews are made available to you on the condition that you agree to these terms of use, which supplement your agreement governing the use of Azure.
https://azure.microsoft.com/en-us/services/preview/
Supplemental Terms of Use for Microsoft Azure Previews
Azure may include preview, beta, or other pre-release features, services, software, or regions offered by Microsoft to obtain customer feedback (“Previews”). Previews are made available to you on the condition that you agree to these terms of use, which supplement your agreement governing use of Azure.
PREVIEWS ARE PROVIDED “AS-IS,” “WITH ALL FAULTS,” AND “AS AVAILABLE,” AND ARE EXCLUDED FROM THE SERVICE LEVEL AGREEMENTS AND LIMITED WARRANTY. Previews may not be covered by customer support. Previews may be subject to reduced or different security, compliance and privacy commitments, as further explained in the Microsoft Online Services Privacy Statement, Microsoft Azure Trust Center, the Online Services Terms, and any additional notices provided with the Preview. Certain named Previews may also be subject to additional terms set forth below, if any. We may change or discontinue Previews at any time without notice. We also may choose not to release a Preview into “General Availability.”
https://azure.microsoft.com/en-us/support/legal/preview-supplemental-terms/
