Having said this, it is time to bid goodbye to the old version. Please note down a few important dates on your calendar to prepare yourself for this change. This is to ensure you have complete clarity about the API roadmap.
Deprecation Date: Dec 31, 2018
Issue fixes, API support and enhancements for the V1(previous) version will not be taken up beyond the deprecated date. All of the V1 API methods will be marked as deprecated.
The V1 APIs used in your existing code will STILL WORK even beyond the deprecated date, and will become non-operational only after the Sunset Date mentioned below.
Sunset Date: Dec 31, 2019
All old API methods will not be operational. All your codes written based on V1 will stop working.
Transition Documentation:
You can also refer to our API Transition and Differences documentation to migrate your existing API V1 code base to API V2 before the dates mentioned earlier.