salesforce release notes Spring’17 release updates
salesforce release notes Spring’17 Preview instruction: Salesforce.com has released sandbox preview instruction for Spring’17 release.
– Preview sandboxes will be upgraded to spring’17 on Jan 6th 2017. If you want spring’17 sandboxes, create/refresh your sandbox before Jan 5th 2016 11.59 pm PST.
– If your sandbox is already in preview sandbox locations, no action required from your side. These sandboxes will be automatically upgraded to spring’17. But if you need latest production copy with Spring’17, create/refresh your sandbox before Jan 5th 2016 11.59 pm PST.
– If you want your sandbox on winter’17(No Preview), create/refresh your sandbox after Jan 6th 2016 12.00 am PST.
– If your sandbox is already in no preview location, no action required from your side. But if you need latest production copy with winter’17, create/refresh your sandbox after Jan 6th 2016 12.00 am PST.
To know more about sandbox preview/no preview instruction, you can refer below Salesforce.com URL.
https://www.salesforce.com/blog/2016/12/salesforce-spring-17-sandbox-preview-instructions.html