Library compatibility with different updates

Hello,
I have one doubt regarding library and purchasing..
I have made 70% of the application with the old library source code and dont want to write all code compatible with the latest releases..
So just wanted to know if i purchase standard licence when it will be available then will it be compatible with your old library source code..

Both JNI interface and java wrapper will be backward compatible.

Only in few cases you will manage modification in API calling.
We will notify those changes in release notes.