Nintendo released System Menu v4.2 for the Wii.

Quote:

It’s very much a killer update, so DO NOT UPDATE if you wan’t to carry out using whatever you already use.

Hard Changes?
– Deletes most homebrew.
– Now uses IOS70. (No Preloader due to that)
– Wii Shop Channel updated. Use WiiSCU to update the shop channel. Use NUS Downloader to download the Wii Shop Channel v17
– Most of the IOS’s have been updated or stubbed.
– Updates your boot2 to boot2v4 (what LU64+’s have). (That means no downgrading of any IOS, and due to that, you can’t revert back to your old System Menu. So BootMii as boot2 installed is removed.)

Thanks to www.tehskeen.com for the news. Discussion: http://www.tehskeen.com/forums/showthread.php?threadid=14320

http://wiibrew.org/wiki/System_Menu_4.2