After applying, the internal TwitterDev team evaluates all applications and will communicate via email to the @user applicant’s account email address during evaluation. Depending on timing, there may be capacity constraints for application approvals and we apologize for delays. It’s important to make sure the @user that was used to apply is set up correctly for email communication, the use case is detailed, and any emails that are sent around the application are followed up on promptly.
We will let developers know via the email as soon as we have reviewed/approved the application. We’re currently unable to provide an estimate for approval times.