Please add support for .app and .ai TLDs

The Route 53 product team is aware of both of the TLDs you are requesting. If you happen to work with an account manager at AWS you can have them or the solutions architect add your customer influence to the existing request. Features are added and worked based on the amount of customer influence a feature has, so every +1 that we can add will help it get more visibility. Unfortunately, AWS doesn't publicize roadmap items, so there is no date of planned support.