UPDATES:
9:44 pm: Given that Tibisay Lucena from the Consejo Nacional Electoral, the electoral authority, is already congregating with members from both parties as well as the national international press, a first announcement may be coming sooner rather than later.
9:09 pm: According to Spanish daily ABC, first exit polls would put Henrique Capriles in the lead. However, official numbers haven't been released yet.
http://www.policymic.com/articles/15995/hugo-chavez-venezuela-election-2012-results-live-will-chavez-lose-to-capriles