ICANN requires the definition of rules to evaluate applied-for gTLD strings. The rules are defined by the community that uses the script by forming a panel to develop proposals. Many script communities have already organized and developed these rules which have been integrated into Root Zone Label Generation Rules (RZ-LGR).
ICANN will accept applications for new gTLDs in the 26 scripts that are currently supported by RZ-LGR: Arabic, Armenian, Bangla, Chinese (Han), Cyrillic, Devanagari, Ethiopic, Georgian, Greek, Gujarati, Gurmukhi, Hebrew, Japanese (Hiragana, Katakana, and Kanji [Han]), Kannada, Khmer, Korean (Hangul and Hanja [Han]), Lao, Latin, Malayalam, Myanmar, Oriya, Sinhala, Tamil, Telugu, and Thai.
No new gTLD applications will be accepted for any scripts that are not integrated into the RZ-LGR.
If your organization intends to apply for a new gTLD in a script that is not yet supported but has common and widespread use, you should work with the community using the script to formulate a panel and develop a proposal for the RZ-LGR. The proposal will then be considered and integrated into the RZ-LGR using the RZ-LGR Procedure.