Husband with books to sample, most current (7)
I believe the answer is:
hottest
'most current' is the definition.
(hot can mean current or trendy)
'husband with books to sample' is the wordplay.
'husband' becomes 'h' (abbreviation).
'with' is a charade indicator (letters next to each other).
'books' becomes 'OT' (abbreviation for Old Testament).
'to sample' becomes 'test' (I've seen this in another clue).
'h'+'ot'+'test'='HOTTEST'
(Other definitions for hottest that I've seen before include "Most torrid" , "Least cold" , "Most heated" , "Most fashionable" , "Of the highest temperature" .)