the switch is the replacement for both the wiiu and the 3ds.
this is niontendo unifying their developement teams.
instead of developing for two platforms and having them suffer for it they can now develop for one.
imagine if you put all the wiiu games and all the 3ds games on one system.
thats what the switch is.
the switch is probably the first nintendo console in awhile that doesnt actually need 3rd party support.
splatoon, mario kart, mario, pokemon, zelda, fire emblem, all on one system.
i cant even imagine what gen 8 is gonna look like on this thing.
- - - Updated - - -
i could see nintendo releasing a "2ds" esque cheaper version at some point though thats smaller, doesnt have the dock, maybe the controllers are built in/non removable.