We have written a significant amount of code which uses the crunchbase version 2 API. I have seen that in version 3, the structure of JSON responses for various end points have changed.
It is mentioned here https://info.crunchbase.com/category/api/
that version 2 will shut down on May 31st, 2015. But I still receive responses for version 2 API calls. We would not really want to upgrade to version 3 unless it is absolutely required. Therefore I wanted to know the time until which version 2 API will work.