A few of us have messed with flashing the new radio or even entire sprint rom and then installing a DCD VZW rom.
Everything seems to work fine until you receive an incoming call and the ringer won't make a sound. Then I've also heard sound is broke for other apps.
I'm sure DCD will have an update soon, he said there's no Red Wings games tonight to take up his time.
Hopefully it's not a major bug.
I've heard of a lot of problems loading just the new radio rom. It loads to 9% and then fails. I've seen this problem for a while since I put 3.27 on my 6800 so it's related to the installed 2.37 radio somehow and not the new radio. I was able to install the entire new Sprint rom and radio without encountering this problem however.