The most significant changes affect the music category, according to the updated regulation rules by the Board of Governors of the Academy of Motion Picture Arts and Sciences for the 87th Academy Awards.
Music branch members may not contact other music branch members to promote the nomination of their own song in any way, including via mail, email, telephone or social media.
Additionally, music branch members may not attend any special live performances of eligible songs unless attached to a screening, a release by the Academy said.
The Oscars will be held on February 22, 2015 at the Dolby Theatre in Hollywood.