When will Nintendo officially reveal NX?

[TheLegendofDS]

Luke888 said:

TheLegendofDS said:

Well even if that rumor is true that still leaves the possible NWC and,unless launches in 2017,Nintendo will most likely want to promote the new system and it's games

NWC can't be counted in E3 conference time, they are a separate event and last year they were about 4 Hours long...

I know that the NWC and the DE aren't counted together but I utalizing the fact that if the NWC return this year Nintendo will almost definitely use it to promote the NX and it's games