Demanding somewhat faster news (5)
I believe the answer is:
stern
'demanding' is the definition.
(similar in meaning)
'somewhat faster news' is the wordplay.
'somewhat' says the answer is hidden in the clue.
'STERN' can be found hidden inside 'faster news'.
(Other definitions for stern that I've seen before include "Ship's rear" , "End part" , "Grimly serious; back" , "Strict - forbidding" , "Severe, demanding" .)