Editor is into new issues (8)
I believe the answer is:
'issues' is the definition.
(I know this)
'editor is into new' is the wordplay.
'editor' becomes 'ed' (abbreviation).
'new' is an anagram indicator.
'isinto' anagrammed gives 'itions'.
(Other definitions for editions that I've seen before include "Particular forms of published texts" , "Impressions given!" , "Repros" , "Book published at different times" , "Numbers" .)