WordNet (r) 3.0 (2006):

unveiling
    n 1: putting on display for the first time; "he attended the
         unveiling of the statue"
    2: the act of beginning something new; "they looked forward to
       the debut of their new product line" [syn: introduction,
       debut, first appearance, launching, unveiling,
       entry]

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "unveiling":
   apocalypse, baring, coming out, curtain raiser, debut,
   demonstration, disclosing, disclosure, discovering, discovery,
   display, embarkation, embarkment, enactment, exhibit, exhibition,
   expose, exposition, exposure, first appearance, floating,
   flotation, inaugural address, inauguration, induction, initiation,
   installation, installment, introduction, launching, laying bare,
   maiden speech, manifestation, opener, opening, ostentation,
   patefaction, performance, preliminary, presentation, presentment,
   production, projection, removing the veil, representation,
   retrospective, revealing, revealment, revelation, show, showing,
   showing up, showup, stripping, uncloaking, uncovering, unfolding,
   unfoldment, unmasking, unwrapping, varnishing day, vernissage