With apple's iOS you can always download it a bit early as you could do a complete restore from the cloud. I'm not sure I trust the WP8 flash and restore process as much so I'll wait for OTA. I just don't want to wait until January 7th to get the camera fixed.
What are you talking about? Didn't you read this site they talk about Portico in fairly great detail and the Camera update to fix the softness from the Lumia 920.
From Nokia Support for those who don't believe this is finalized....
More efficient Messaging, allowing you to save draft messages, edit forwarded multimedia messages, select multiple recipients at once, and respond to a call with a text message
Improved performance, audio quality, and connection stability for Bluetooth
Improved battery level metering
Improved stability, speed, and functionality for the camera
Can now better control data costs: you can prevent automatic fallback from a Wi-Fi network to a mobile data network and keep Wi-Fi always on to off-load network usage to Wi-Fi