Google has announced the launch of a New Google Adwords API which has been designed to replace the existing version and improve web services. Thereplacement Adwords API is completely new and has undergone a fundamental rewrite. The changes are as follows:

1) New web services for managing Campaign targeting options and campaign- level criteria
2) All web services share a consistent, data-centric interface with two operations: get and mutate.
3) A secure authentication token replaces the login credentials required in v13 request headers
To find out more about the new Adwords API click here.