Celebration of any recent change (9)
I believe the answer is:
centenary
'celebration' is the definition.
(I've seen this before)
'any recent change' is the wordplay.
'change' indicates an anagram.
'any'+'recent'='anyrecent'
'anyrecent' is an anagram of 'CENTENARY'.
'of' is the link.
(Other definitions for centenary that I've seen before include "... so celebrating this next month" , "special occasion" , "significant anniversary" , "One hundredth anniversary" , "celebration" .)