The 32GB touch is now $279 (down from $399), the 16GB is $249 (was $299), and the 8GB model is $189 instead of $229. Could a 64GB model arrive at Apple's event today? Meanwhile, the nano now starts at $129...
Update: As pointed out in the comments, the nano has also been slashed. It's now at $129 (8GB) and $149 (16GB), while the Classic is down to $229 (was $249). [Apple Store] Thanks Max, and @Galaxius.