In our code we are using the below REST API Endpoint https://outlook.office365.com/api/{version}/{user_context}
There was a mention in this link(https://msdn.microsoft.com/en-us/office/office365/api/use-outlook-rest-api) that the above REST API Endpoint will work for a while and that we will need to change to the new REST API. Please can you confirm the until when https://outlook.office365.com/api/{version}/{user_context} URL will be valid.
Thank you