There simply isn't any news to report. There aren't many new 3rd party titles being announced, and their next major 1st party titles is a little under 2 months away. They'll do an NDC to promote the MarioKart launch, but save any future announcements until after that game comes out so they have content to promote at E3.
I expect a fair amount of news at E3. But realistically, there is only so much one publisher can make and promote. Nintendo either needs to get 3rd parties on board with their consoles or add 5-10 development teams so that their consoles are self-sustaining by 1st party alone.
Although, in all honesty there isn't a lot being announced for One or 4, either. They both had their major spring title come out, Nintendo's isn't ready yet. That's pretty much the only difference.
