No you have to update the rom.
There's a lot of threads for the rest of us to read too, but we all managed
For a short version, just head over to OMJ's rom thread:
http://forum.ppcgeeks.com/showthread.php?t=25335 and make sure to follow the three steps at the top.
* You have to install the ImCokeMan unlocker 2.31 first or you will break your phone.
* You have to skip customizations when running the leaked rom or you will break your phone.
* You should then install the OMJ verizon rom from part way down the post to get other stuff working, and avoid problems when you hard reset and forget to skip customizations.
For a detailed guide check out:
http://forum.ppcgeeks.com/showthread.php?t=24979
You can skip the part about downloading the verizon carrier rom, because there isn't one... but follow ALL the other instructions.
For step 12, I would suggest OMJ's verizon rom, from the "short version" thread.
Good luck!