Seems to have been a huge leak from a user from reddit.(whom has since deleted his account)

https://www.reddit.com/r/NintendoSwitch/comments/5tsruy/leaked_indevelopment_ui_mockups/

Also on Gaf: http://www.neogaf.com/forum/showthread.php?t=1343614&page=1 (thanks wyrdness)

Keep in mind, these documents are from an era where the device was called the NX still, so specs and features could have easily been added, removed, improved or worsened. 

Some takeaways from this :

OS uses 750MB Ram. 3.25GB Usable by developers.

Dev units did have 64GB Storage, Retail has 32GB

Unreal 4: The NX version will include these latest revisions, and will be optimized so that you can create games while taking full advantage of the hardware performance. Note that there may be restrictions on available functionality, depending on NX performance.

The device does not have a built-in mic. A headset must be connected to this port to use in-game chat or similar features.

Game Cards only go up to 32GB at the moment, Capacity variations include 1 GB, 2 GB, 4 GB, 8 GB, 16 GB, and 32 GB.

Pro Controller doesn't have IR, but does have accelerometers and gryos.

Pro Controller has 2 Linear resonant actuators, which allow HD rumble. This is probably the main reason why it costs so much. 

SoC equivalent to Tegra X1 from NVIDIA.

Battery charges last for approximately three hours (the same as for the Nintendo 3DS). 

NX specifications will not use region locks. As a result, it will be possible to play any downloadable software on any NX.  So, no worries about downloadable content based off of this rumor. It's up to the developer to allow downloads from any region.

You may want to correct that.

Thanks That'd be great though.

FP32 flops, or FP16 flops? If it's FP32, then I call BS. If it's FP16..... well it still seems sketchy, but at least it's somewhat believable.

On Gaf now as well

http://www.neogaf.com/forum/showthread.php?t=1343614&page=1

That I don't know, so I guess I shouldn't put that in the title. It could be FP16... due to performance of Zelda alone.

So it can do 4k at 30fps?

Just...maybe

If rumors are true, that is worth noting.

Is there going to be 4k games? Ha, no. No one expects that. Well beyond some indie size games.

But it's worth noting for when they maybe bring netflix and co to the system that it could be a 4k streaming device, same as ps4pro.

And then the little indie games that brag about being 4k for no reason. You know like if shove knight or sonic mania or somethign is in 4k. It's not gonna blow off anyones socks. These are crisis games or anything.

That's the port output not the console itself, for example older platforms like the PS2 technically had HD output but obviously the hardware would never reach that.