Happy to see revamp (6)
I believe the answer is:
update
'revamp' is the definition.
The definition and answer can be both related to change as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?
'happy to see' is the wordplay.
'happy' becomes 'up' (I've seen this in other clues).
'to see' becomes 'date' (synonyms).
'up'+'date'='UPDATE'
Can you help me to learn more?
(Other definitions for update that I've seen before include "Brief" , "Renew" , "Latest information" , "Supply latest info" , "Latest news" .)