The "domain name" field will display the registered name in Punycode (e.g. probestück.info will appear as xn--probestck-w9a.info). Three additional fields will be introduced to the Afilias Whois:

IDN Script: The intended script / language (based on RFC3066) of the IDN as determined by the registrant (e.g. "de" for German)

Unicode Hex: The IDN in Unicode Hex format (e.g. U+0070 U+0072 U+006F U+0062 U+0065 U+0073 U+0074 U+00FC U+0063 U+006B)

Unicode HTML: The IDN in HTML entity format (e.g.: probestück)