OptiFine 1.9.2_HD_U_B1
 - updated to Minecraft 1.9.2
 (03.04.2016)

OptiFine 1.9.0_HD_U_B1
 - fixed memory usage with AF and AA
 - fixed single-core chunk loading
 - enabled simple spectral effect when Fast Render, Antialiasing or Shaders are active
 - fixed chunk loading when changing dimensions 
 - removed all Mojang content from final JAR  
 - added support for class patches
 - updated to Minecraft 1.9
 - compatible with Forge #1797
 (26.03.2016)