There are some rumblings about the release of the oft delayed white version of the iPhone 4. Now that we're nearing the Verizon launch of the device, those rumors are starting up again and it looks like a Q1 or 2 release is actually possible.
Releasing the white version now would actually make sense since there's a bigger event going on (new carrier). Perhaps it'll even be a Verizon exclusive? If you don't see it soon though- lets just say that the iPhone 5 isn't really all the far into the future at this point. Apple might just want to wait for that one.
