The 'House of Cards' actress and the 'Breaking Bad' star will read the list of nominees at the press conference - which will air and stream live from the Academy's Leonard H. Goldenson Theatre in North Hollywood - alongside chairman and CEO Bruce Rosenblum.
Aaron has been nominated three times for playing Jesse Pinkman on 'Breaking Bad' and picked up the supporting actor gong in both 2010 and 2012.
Neil Patrick Harris - who previously hosted the awards in 2009 - will preside over the ceremony on September 22 this year, just a few months after he presents the Tony Awards in June.
He previously said: ''I couldn't be more honoured and excited to be hosting this year's Emmy Awards. And what perfect timing - I'll just do the exact same script I'm about to use for the Tonys. 'And the Emmy for Best Revival of a Musical goes to Breaking Bad!' See, told you it works.''
CBS Entertainment chief Nina Tassler added: ''Neil is the quintessential host - engaging, entertaining and a true showman - with a passion for celebrating the medium we all love. We're thrilled for him to return for CBS's broadcast of the Emmy Awards.''
Spike Jones Jr. will again produce the Emmy Awards telecast, which will air on CBS.
The nominations announcement can be watched live at www.emmys.com.
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