This problem has nothing to do with Plesk actually. The trick is that IDNA 2008 is not adopted fully in the world, except that some registrars allow to book domains with “ß”. However there is no way for a visitor to ever get into such domain, as every mainstream browser will translate “ß” character as “ss” – MS Internet Explorer, Google Chrome, Mozilla Firefox, Apple Safari and even new Opera. Simply no way for a visitor to get into “ß” domain.

As a result, Plesk 12.0 supports IDNA 2008 in so-called “transitional mode” which is fully compliant with browsers behaviour and interprets “ss” and “ß” as same character.

Assuming that Plesk will follow your proposal and switch into full IDNA 2008 mode, then you will be able to create domains with “ß” (which is not “ss”), BUT all visitors will either see its “ss”-version (if both domains registered and hosted) or “No such domain” error (if “ss” version" wasn’t registered and hoster). So there is no profit.

Again – problem is not in Plesk, but in browsers. Once there are browsers supporting full IDNA 2008, Plesk will happy to change.

IDNA 2008 is supported in Plesk for Linux and you can host all special characters including “ß”. The only thing you cannot do – is to host “ss” and “ß” versions of domain simultaneously.

This problem has nothing to do with Plesk actually. The trick is that IDNA 2008 is not adopted fully in the world, except that some registrars allow to book domains with “ß”. However there is no way for a visitor to ever get into such domain, as every mainstream browser will translate “ß” character as “ss” – MS Internet Explorer, Google Chrome, Mozilla Firefox, Apple Safari and even new Opera. Simply no way for a visitor to get into “ß” domain.

As a result, Plesk 12.0 supports IDNA 2008 in so-called “transitional mode” which is fully compliant with browsers behaviour and interprets “ss” and “ß” as same character.

Assuming that Plesk will follow your proposal and switch into full IDNA 2008 mode, then you will be able to create domains with “ß” (which is not “ss”), BUT all visitors will either see its “ss”-version (if both domains registered and hosted) or “No such domain” error (if “ss” version" wasn’t registered and hoster). So there is no profit.

Again – problem is not in Plesk, but in browsers. Once there are browsers supporting full IDNA 2008, Plesk will happy to change.