En el mail me adjuntaron mas informacion, la fecha limite corregida:
The new due date will be April 16th. Please have packages postmarked by this date. If international, we request that packages be postmarked by March 31st so as to assure they arrive in time for judging.
Finalists will be announced June 14th, 2013 by email. The winner will be announced at PolyCon 31. (Date pending; notification will be sent out when a final date is set.)