Excitement about piece of news (4)
I believe the answer is:
item
'piece of news' is the definition.
(I've seen this before)
'excitement about' is the wordplay.
'about' indicates the answer is hidden within the clue (the clue goes around or about the answer).
'ITEM' is hidden within 'excitement'.
(Other definitions for item that I've seen before include "See couple" , "date" , "Article (on list or in news)" , "Two lovers as one" , "One thing on a list" .)