Complex sentence: In April 2013 the band announced they had parted with Hassle Records and signed with Red Bull Records, and later in the year the band was announced as a support act for rock band Mallory Knox.
Split into simpler sentences: In April 2013 the band announced they had parted with Hassle Records and signed with Red Bull Records. In late 2013, the band was announced as a support act for rock band Mallory Knox.