Deprecation should be interpreted as a fair warning that the version will soon be turned off. Developers will actively be encouraged to upgrade their code at that point. Sunset means that the version is no longer available.
The current schedule is deprecation / sunset takes effect on the last weekday of:
|v201908||May 2020||August 2020|
|v201905||February 2020||May 2020|
|v201902||November 2019||February 2020|
|v201811||Currently Deprecated||November 2019|
You can download a CSV with the up-to-date deprecation schedule below.