Is the parson shortly back on form? (7)
I believe the answer is:
version
'form?' is the definition.
(I know that version is a type of type)
'is the parson shortly back on' is the wordplay.
'the parson shortly' becomes 'rev' (short for reverend, term of address for a parson; 'shortly' suggests a short form).
'back' shows that the letters should be reversed in order.
'is'+'rev'='isrev'
'isrev' back-to-front is 'versi'.
'versi'+'on'='VERSION'
(Other definitions for version that I've seen before include "Something a little different - so riven (anag)" , "See 24" , "Adaptation" , "Account from one point of view" , "Interpretation, account" .)