Current year opening for information bureau (6)
I believe the answer is:
agency
'bureau' is the definition.
(synonyms)
'current year opening for information' is the wordplay.
'current' becomes 'ac' (alternating current).
'year' becomes 'y'.
'opening for' is an insertion indicator (some letters open up to accept other letters).
'information' becomes 'gen' (gen can informally mean information).
'ac'+'y'='acy'
'acy' going around 'gen' is 'AGENCY'.
(Other definitions for agency that I've seen before include "Intervention producing a particular effect" , "Business that acts for other businesses" , "Function of one who acts for another" , "Instrumentality, operation" , "Business that acts for actors" .)