Hi Ariel,
Thanks for reaching out. We recommend to continue running production systems using the AdWords API. While Google Ads API is in “beta”, you may use the new API for testing and development work in preparation for future migration. Please keep in mind that during this "beta" phase, there may be breaking changes in the Google Ads API. Please let us know if you have any other concerns.
Thanks and regards,
Xiaoming, Google Ads API Team