This is surely a good news for all advertisers who can now use the new beta version i.e API v2009 of the AdWords.
Apart from adding more languages a few months back, the team has also made some significant changes and improvements in the API. The rate sheet for API calls is now showing a reduced rate along with new features like asynchronous calls, reporting, keyword optimization tools and partial failure acceptance.
If you are amongst advertisers who are using API (v13), it's time for a change. Try out the new API because it has significant differences from the current version that will likely be retired by 2010. So, prepare yourself in advance.