When will Nintendo officially reveal NX?

[Luke888]

TheLegendofDS said:

JEMC said:

There's a rumor saying that this year's Nintendo conference/Direct (we still don't know what they'll do), will be 1 1/2 hours long.

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...