The Collaborative International Dictionary of English v.0.48:

Currentness \Cur"rent*ness\, n.
   1. The quality of being current; currency; circulation;
      general reception.
      [1913 Webster]

   2. Easiness of pronunciation; fluency. [Obs.]
      [1913 Webster]

            When currentness [combineth] with staidness, how can
            the language . . . sound other than most full of
            sweetness?                            --Camden.
      [1913 Webster]

WordNet (r) 3.0 (2006):

currentness
    n 1: the property of belonging to the present time; "the
         currency of a slang term" [syn: currentness, currency,
         up-to-dateness]