Some Nintendo Switch sdk docs have leaked.
NX-Overview-1_3-20160715-en-Private.zip
NX-SDEV_Quick_Start-3_2-20160729-en-Private.zip
NX-System_Features_Guide-1_1-20160930-en-Private.zip
Responses
In response to blip #67002
Nintendo Switch Gamecard capacity.
1 GB, 2 GB, 4 GB, 8 GB, 16 GB, and 32 GB.
Each user can have as many as 300 friends.
In response to blip #67002
Load Executable
Samples\Outputs\NX-NXFP2-a64\Aplications\GfxPrimitiveRenderer\Develop\GfxPrimitiveRenderer.nca
In response to blip #67002
Seems like the Switch game/app icons are 256 x 256.
Wii-U: 128 x 128
3DS: 48 x 48 and 24 x 24
In response to blip #67002
Nintendo Switch Web Applet does have Webm support.
In response to blip #67002
Nintendo Switch stores game save data on the Switch itself, but there is read/write capability for the carts. So, what would get saved to retail carts? Game update data most likely gets saved to the system like Wii-U/3DS.