The RS3M 2021 is the first cube to have magnetic levitation technology used in the place of springs, while the piece design is the exact same as the original RS3M 2020, the magnetic levitation technology provides a different feel by eliminating the friction that conventional springs would produce. This also eliminates spring noise and makes the cube exceptionally fast out of the box, too fast for most people I suspect!
Other Posts

Is he pranking us again? Tony Fisher unveils '100x100x100'
Tony Fisher is a very well known puzzle designer and has previously held the world record for the...

Why you need to learn to fix cubes!
As the average age of the cubing community has decreased and as cubes have improved, I have noticed...

Premier Speedcubing League announced
The Premier Speedcubing League has been announced and is set to hold...