Version 3.4 of the System Menu was announced on November 17, 2008, by Nintendo sending notices to the Wii Message Board. The announcement lists these changes:
* USB keyboard support in Mii Channel
* Enhanced parental controls
* Twilight Hack version 0.1beta1 cannot be copied to the console.
* Nintendo's Network Policy has been rephrased.
Two other changes have been noted:
* Improved SD card read/write speed
* Improved disc reading
Update appears to include IOS50 (used by menu) and IOS254 (a copy of IOS9, to block PatchMii).