Really, news should cover French and Shakespearean verse (6)
I believe the answer is:
sonnet
'shakespearean verse' is the definition.
(I've seen this in another clue)
'really news should cover french and' is the wordplay.
I cannot quite see how this works, but
'really' could be 'so' (both can mean 'extremely') and 'so' is present in the answer.
'news' could be 'nn' (the abbreviation for 'new' written twice) and 'nn' is found within the answer.
'french and' could be 'et' ('and' in French) and 'et' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sonnet that I've seen before include "Fourteen-lined verse" , "Form of poem" , "Fourteen line poem" , "14-line verse" , "Shakespearean poem" .)