So here is an interesting point of discussion, maybe something that could possibly be seen at E3. This has been talked about before when it was announced, but we can talk about it in more detail now since they're out.
Those NIVIDIA Shield versions of Nintendo Wii games have started releasing in China. These are only intended for the Chinese market so it's unlikely NVIDIA Shield users outside of China will get access to these.
However, of note is the fact that the NVIDIA Shield uses NVIDIA's Tegra X1 chip to power it's graphics - the very same chip that's used to power the Nintendo Switch's graphics. Additionally, these ports are confirmed to not actually be ports, but instead, are emulated games running at a 1920x1080 native resolution. Additionally, the UI for the games has been reworked with HD assets and of course to add Chinese text to the games and to account for the NVIDIA Shield's control scheme (for example, you used to have to shake Wii Remote to spin in Super Mario Galaxy. Now you just press the X button, and the tutorial prompts have been changed to reflect this).
So obviously the question is - could we see Nintendo move this project to the Switch in order to bring GameCube (the Shield version of Twilight Princess is based on the Gamecube version) and Wii games to the Switch, at native 1080p? I mean, I think they'd be moronic not to. The Switch has the same graphics processor as the Shield. The games are all emulated, so clearly they've had a Gamecube/Wii emulator similar to Dolphin built for this, which means less work has to be done to port each individual game. While the ports on the Shield have slight performance issues, this is currently being thought to be due to the fact that the Shield uses an Android OS which does sometimes have performance problems with 3D games, while the Switch is actually using a custom OS built by NVIDIA, so it likely won't cause such problems. Additionally, the splash screens for these games credit NVIDIA Lightspeed Studios. They're known for porting PC games to the Shield, so it's likely they're actually the studio developing these Nintendo ports. So Nintendo has a studio contracted to do the work for them. And while the Shield versions of the Wii games are limited to using the right-stick for IR pointer functionality (like the Star Cursor in Super Mario Galaxy), the Switch's right Joy-con has an IR sensor so you could probably more accurately emulate the IR sensor functionality (and the Switch's touch screen could be used in handheld mode).
Nintendo did say that they were getting rid of Virtual Console to explore more avenues for bringing old games to the Switch. I think having NVIDIA Lightspeed Studios bring these ports to the Switch would be a great alternative for the GC and Wii games, if not an objectively superior one. I'm sure Nintendo's teams could also be trained in this emulator, allowing them to port their own backlogs independently if needed (for example, if Monolith Soft were trained in it, they could bring a 1080p version of Xenoblade Chronicles to the Switch themselves with relatively little effort and manpower).
This would be an amazing announcement for E3 IMO, but even if we don't see it there, I sincerely hope Nintendo capitalises on this. They're looking at a goldmine.