[otrs] OTRS 2.4 questions

Hy guys, as otrs 2.4 is ongoing and to be released very soon :-) i was wondering several questions: - for those running otrs::itsm latest version, will the update to 2.4 version of otrs break all the itsm stuff ? - can i use the itsm module on a fresh and clean install of otrs 2.4 ? Rachid