The latest update, which rolls the Wii Menu to 3.3, not only kills the Twilight Hack, but also allows you to move a Mii from the Mii Plaza into the Mii Parade directly, thanks to the addition of a handy new icon. You just drag and drop as you normally would.
But, let's get back to the real news here. Nintendo has finally gone ahead and sunk the U.S.S. Homebrew. We're anxious to see how the community is going to take this one.
Update: According to commenters, the update doesn't kill the Homebrew Channel (if it was already installed), so there's still something for you all to have fun with.
Update 2: Looks like Freeloader is affected by this new update, as well. Sad face.