Not to hijack/be off-topic, but if you don't want to wait, you can try this seller on ebay:
http://cgi.ebay.com/Apple-iPhone-4-...er_MP3_Player_Accessories&hash=item563dbad98b
These static-cling protectors cover both the front and back. There is a cutout for both front and rear cameras as well as the LED flash in the back. I bought a few sets myself. The quality far, far exceeded my expectations. I'm even going to say it's better than SGP and almost on par with Power Support. And for the price, you really can't complain.
I was originally going to wait around for the PS set, but who knows when it will ship, and with all the confusion going on with the back... Plus the shipping they're charging is horrible. Close to $30 shipped for 2 films, forget it.
There are no flash issues with the rear film either. The fit is great and the clarity is even better than SGP's Ultra Clear. The packaging is generic, but once you open it, you can tell that the films are the same as what you get with the fancier packaged ones. It doesn't disrupt usage with bumpers either. The seller shipped out from Brooklyn and I received my films in just 2 days. My quest for front/rear protectors have ended and I'm pretty happy with that.