Translate a paper that's to be published (6)
I believe the answer is:
appear
'to be published' is the definition.
(eg a book appears in a particular month)
'translate a paper' is the wordplay.
'translate' indicates an anagram (translate can mean to transform).
'a'+'paper'='apaper'
'apaper' anagrammed gives 'APPEAR'.
'that's' acts as a link.
(Other definitions for appear that I've seen before include "Become visible as ghost might" , "Materialise like ghost" , "Come into sight, materialise" , "Arrive" , "Show up, become visible" .)