Today we’re launching the full version of the new Google Ads scripts experience . The beta has been running since June of last year, and now the final batch of features to match the functionality of legacy scripts has been released.
  Support for ES6 , including let, classes, for..of loops, and more . 
  Improved throughput, meaning you can process more entities in the same amount of time. We've also removed the entity limits on processing, although time limits remain in place. 
  Support for new asset-based extensions . 
  Enhanced bidding strategy support . 
 
The following features are added in this release:
  Manager account scripts 
  Bulk upload 
  Video campaigns 
 
See the updated Google Ads scripts site  for full information on the new experience, including migration information, performance improvements, and updated best practices. This replaces the documentation for the legacy scripts experience, but if you must reference that we will preserve it at a new location until the legacy scripts sunset: https://developers.google.com/google-ads/scripts-legacy forum  so that we can help. - Mike Cloonan, Google Ads Scripts Team