3DSWiiWii U Nintendo dates E3 press conference Wii U shines the morning of E3. Nintendo has dated its E3 media briefing. The Wii U manufacturer will hold its press conference on Tuesday, June 5 from 9 to 10 a.m. Pacific / 11 a.m. to 12 p.m. Eastern at the Nokia Theater.E3 2012 also kicks off on June 5.