Wahoo just announced the newest version of their KICKR smart trainer the new 5th Gen KICKR AXIS.
Wahoo has added their AXIS feet system to the new trainer, giving you up to 5° of tilt to each side by just changing the foot pods.
Each AXIS foot pod has three different stiffness options – easy, medium, or hard. Supposedly offers a more realistic ride feel with side to side movement, and may even help you train more effectively by using more of the muscles you’d use while riding outside.
Not sure how much better it would be over a actual Rocker, it looks more “stable” and more about increasing comfort?