It’s not every season that brings some new interest (6)
I believe the answer is:
winter
'it's not every season that' is the definition.
I can't judge whether this defines the answer.
'some new interest' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'WINTER' is hidden in the letters of 'new interest'.
'brings' is the link.
Can you help me to learn more?
(Other definitions for winter that I've seen before include "period of discontent?" , "Coldest season" , "'Now is the . . . . . . of our discontent' (Richard III)" , "period of freeze?" , "Time for mittens and scarves?" .)