Intro to revised volume includes new translation (9)
I believe the answer is:
rendition
'translation' is the definition.
(I've seen this in another clue)
'intro to revised volume includes new' is the wordplay.
'intro to' indicates taking the first letters.
'volume' becomes 'edition' (edition can mean a volume or issue).
'includes' is an insertion indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
The initial letter of 'revised' is 'r'.
'edition' enclosing 'n' is 'endition'.
'r'+'endition'='RENDITION'
(Other definitions for rendition that I've seen before include "Account" , "Interpretation (of e.g. song)" , "Dramatic performance" , "that may be extraordinary" , "Performance; translation" .)