New reCaptcha rollout plan

Google recently updated reCaptcha to make it easier for humans but harder for bots. However, none of the new versions have shown up on my site yet, and I don't see anything in the API docs about the new version. What's the rollout plan, or does anyone know how to update to the new version already? Thanks! -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://groups.google.com/group/recaptcha. For more options, visit https://groups.google.com/groups/opt_out.