Issue for year, filled with information (7)
I believe the answer is:
progeny
'issue' is the definition.
(thesaurus)
'for year filled with information' is the wordplay.
'for' becomes 'pro' (I've seen this before).
'year' becomes 'y'.
'filled with' is an insertion indicator.
'information' becomes 'gen' (gen is a kind of information).
'pro'+'y'='proy'
'proy' placed around 'gen' is 'PROGENY'.
(Other definitions for progeny that I've seen before include "Issue, offspring" , "Children" , "seed?" .)