While they do like to mix things up on occasion they have there fair share of consoles that feel like iterations on a theme.
- NES>SNES
- N64>GameCube
- GB>GBA
- DS>3DS
With official announcements of a Switch successor including continuing software compatibility it seemed likely that it would keep the general form factor.
Branding aside, the GameCube had:
These feel like vestigial N64 features
Edit: and three shoulder/trigger buttons!