P.S. -- We've had many readers asking where we got the parts, but the link's already in the post. Knowing some Chinese helps, too.
Update: we caved in and unboxed our iPhone 4 dock for a few more shots. It's worth noting that our prototype white covers don't quite match the dock's whiteness -- we'd say the covers look a touch warmer and darker. Knowing how picky Jony Ive is with colors, we're guessing Apple's buying time to get the paint job right.
Update 2: we acquired a broken black back plate and managed to fit its lens cover onto our white one. Win.
White iPhone 4: early DIY edition, with a touch of blackSee all photos
Replacing the back cover is hardly a challenge -- just remove the two screws at the bottom and then slide the cover up, but to get to the front cover you'll need to take out most of the components. We'll be honest with you: dissecting a brand new toy isn't exactly the most pleasant experience in the world. Even with a brilliant teardown guide, there'll always be somewhere that requires super delicate fiddling. For instance, we struggled with removing the battery and the front cover due to some nasty double-sided tape, so we had to poke around extra carefully to avoid any damage. At one point, we spent about 20 minutes wondering why the logic board wouldn't go back in, only to realize that a well-disguised screw was in the way. Other than that, we'd say this was a pretty straightforward mod (so long as you keep track of all your screws, of course).