Bad news about nothing being right, will not improve (6)
I believe the answer is:
worsen
'not improve' is the definition.
('worsen' is the opposite to 'improve')
'bad news about nothing being right' is the wordplay.
'bad' is an anagram indicator.
'about' is an insertion indicator.
'nothing' becomes 'O' (O resembles 0).
'being right' becomes 'r' (common abbreviation).
'news' with letters rearranged gives 'wsen'.
'o'+'r'='or'
'wsen' going around 'or' is 'WORSEN'.
'will' is the link.
(Other definitions for worsen that I've seen before include "go downhill" , "Become more inferior" , "Aggravate" , "Deteriorate for owners" , "Go to pot" .)