Before I start, I'm sorry if I sound like I'm a GameXplain employee.
Anyway, we see a bunch a things here like:
-The Switch boot-up screen
-Joycon sync process
-Making a Profile
-Selecting a Profile Icon
-Needing to update to access the eShop
-The News section
-Album/Screenshot Menu
-System Settings
-Themes
and...
-Sleep Mode
As we can tell these things are "very exciting".
and uh... I'm gonna wait on Jackbox Party Pack 3 and some other games before I buy a Switch.