Yeah, this is actually the 3DS games showcase tonight for us in the USA. It can be seen at e3.nintendo.com I believe(6pm pacific standard time in the US).Nintendo are having a Software Showcase tomorrow - I suspect we'll see a lot more for the WiiU and 3Ds than has been shown so far (plus longer vids/demos) of those they have.
It's on at 2:00am GMT for us Europeans not sure what time that is in L.A.
I'm guessing they will show some unannounced games the way they made it sound yesterday, but don't be suprised to just see more details on games we already know about.
Chris