I know TLD availability is very important to our customers and over the years I can tell you our Route 53 team has worked to expand the ever growing lists of TLDs we support, especially because of customer feedback.
Having said that, I have also submitted a request on your behalf to the Route 53 team to support this TLD, as I understand how important this can be for you. However, unfortunately, I wouldn't be able to provide you a timeline as to when this TLD will be added. Please understand that new feature launch takes time. However, as I mentioned before, you can follow our news page  and blog  to keep up with our latest feature/service launch announcements.
You can keep an eye on the links below for any announcements regarding that.
When will we be able to register .art top level domains with Route53asked 21 days ago
When will we be able to register .at top level domains with Route53asked 21 days ago
Please add support for the .ws top-level doman (TLD)asked 6 months ago
Please add TLD ".art" to Route53asked a month ago
Please add TDL ".ag" to Route53asked a month ago
Route 53 TLD Request .LLC and .CHRISTMASasked 6 months ago
Add .uk.com to possible Top Level Domains pleaseAccepted Answerasked 3 months ago
Please add TDL ".com.tw" to Route53asked a month ago
Add top-level domainasked 4 months ago
Please add TLD .game to Route 53asked 15 days ago