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' suggests taking the first letters.
'volume' becomes 'edition' (edition can mean a volume or issue).
'includes' indicates putting letters inside.
'new' becomes 'n' (abbreviation as in New Testament NT).
The first 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" .)