Minecraft wiki entry for Development_versions, associated text: Added a new "Distortion Effects" slider, which affects screen distortion effects such as Nausea and the nether portal distortion.
Ranges from OFF (0%) to 100%.
As the slider goes lower, a green overlay will appear more intensely on the screen.
Despite the options menu saying this replaces the nausea effect at lower levels, it actually acts as an inverse relationship. The nausea distortion is not truly disabled unless the slider is set to "OFF."
Added a new "FOV Effects" slider.
Affects intensity of the change of FOV when doing things such as sprinting, aiming a bow, walking on soul sand or soul soil with soul speed, or having the Speed or Slowness effects applied.[more information needed]
"Chat Delay" is now also available in chat settings.
Previously, it was only available in accessibility settings.