New edition concerning children (7)
I believe the answer is:
reissue
'new edition' is the definition.
'reissue' can be an answer for 'edition' (thesaurus). I'm unsure of the 'new' bit.
'concerning children' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'children' becomes 'issue' (issue can mean someone's offspring).
're'+'issue'='REISSUE'
Can you help me to learn more?
(Other definitions for reissue that I've seen before include "Circulate a second time" , "Put out yet again" , "Publication reprint" , "Again 22 across" , "Put out old material" .)