4.0.3 has been pushed to the AOSP by Google, but it has not gone out OTA yet. Installing any of the 4.0.3 roms over 4.0.2 works just fine and will effectively "update" your device.

 

I see you have a Droid X listed over to the left, and I sympathize with your question. For anyone who reads this and thinks it's silly because you haven't had a phone with a locked bootloader, rest assured that with the X, you couldn't load a later version than what your OTA was without dancing with the proverbial devil. It's such a damn relief to have the Nexus now...I loved my Droid X, but this stuff was scary and a hassle.