Mr Yabuki took the stage at this year's Game Developers Conference to show off the design philosophy behind ARMS. Attendees got an interesting look at concept art and prototype footage which you can see after the page break.
UPDATE: You can view the full GDC ARMS conferance below:
Source
Nintendo Minute co-host Kit Ellis also recorded some early prototype footage that was shared as well:
Early version of ARMS and prototype Joy-Con. pic.twitter.com/BPi7aI1xWm— Kit Ellis (@kitosan) March 21, 2018