New version of Art Deco — to a degree (9)
I believe the answer is:
doctorate
'a degree' is the definition.
(I know that doctorate is a type of degree)
'new version of art deco to' is the wordplay.
'new version of' indicates anagramming the letters.
'art'+'deco'+'to'='artdecoto'
'artdecoto' with letters rearranged gives 'DOCTORATE'.
(Other definitions for doctorate that I've seen before include "PhD or D.Phil" , "Higher degree" , "Highest academic degree" , "High degree" , "Highest degree in university" .)